| 1973 | Buick | Regal | | Rear | Coupe | RWD | 5.7L V8, 7.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1974 | Buick | Regal | | Rear | Coupe, Sedan | RWD | 5.7L V8, 7.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1975 | Buick | Regal | | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1976 | Buick | Regal | SR | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1977 | Buick | Regal | SR | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1978 | Buick | Regal | Limited, Sport | Rear | Coupe | RWD | 3.2L V6, 3.8L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1979 | Buick | Regal | Limited, Sport | Rear | Coupe | RWD | 3.2L V6, 3.8L V6, 4.9L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1980 | Buick | Regal | Limited, Sport | Rear | Coupe | RWD | 3.8L V6, 4.3L V8, 4.9L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1981 | Buick | Regal | Limited, Sport | Rear | Coupe | RWD | 3.8L V6, 4.3L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1982 | Buick | Regal | Estate Wagon, Limited, Limited Turbo, Sport | Rear | Coupe, Sedan, Wagon | RWD | 3.8L V6, 4.1L V6, 4.3L V6, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1983 | Buick | Regal | Estate Wagon, Limited | Rear | Coupe, Sedan, Wagon | RWD | 3.8L V6, 4.1L V6, 4.3L V6, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1984 | Buick | Regal | Grand National, Limited, T-Type | Rear | Coupe, Sedan | RWD | 3.8L V6, 4.1L V6, 4.3L V6 | Lowering Rate: R: 0-1 Inch, Lowering Rate: R: 0-1.5 Inch |
| 1985 | Buick | Regal | Grand National, Limited, T-Type | Rear | Coupe | RWD | 3.8L V6, 4.3L V6, 5.7L V8 | Lowering Rate: R: 0-1 Inch, Lowering Rate: R: 0-1.5 Inch |
| 1986 | Buick | Regal | Grand National, Limited, T-Type | Rear | Coupe | RWD | 3.8L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch, Lowering Rate: R: 0-1.5 Inch |
| 1987 | Buick | Regal | GNX, Grand National, Limited | Rear | Coupe | RWD | 3.8L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch, Lowering Rate: R: 0-1.5 Inch |
| 1992 - 1995 | Buick | Roadmaster | Estate Wagon, Limited | Rear | Sedan, Wagon | RWD | 5.7L V8 | Lowering Rate: R: 2-2.25 Inch |
| 1996 | Buick | Roadmaster | Collector's Edition, Estate Wagon Collector's Edition, Limited Collector's Edition | Rear | Sedan, Wagon | RWD | 5.7L V8 | Lowering Rate: R: 2-2.25 Inch |
| 1967 | Buick | Skylark | | Rear | Convertible, Coupe, Hardtop, Sedan | RWD | 3.7L V6, 4.9L V8, 5.6L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1968 | Buick | Skylark | Custom | Rear | Convertible, Coupe, Hardtop, Sedan | RWD | 4.1L L6, 5.7L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1969 | Buick | Skylark | Custom | Rear | Convertible, Hardtop, Sedan | RWD | 4.1L L6, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1970 | Buick | Skylark | 350, Custom | Rear | Convertible, Hardtop, Sedan | RWD | 4.1L L6, 5.7L V8, 7.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1971 | Buick | Skylark | Custom | Rear | Convertible, Coupe, Hardtop, Sedan | RWD | 4.1L L6, 5.7L V8, 7.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1972 | Buick | Skylark | 350, Custom | Rear | Convertible, Coupe, Hardtop, Sedan | RWD | 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1992 | Chevrolet | Caprice | Classic, Classic LTZ | Rear | Sedan, Wagon | RWD | 4.3L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 2-2.5 Inch |
| 1993 | Chevrolet | Caprice | Classic, Classic LS, Classic LTZ | Rear | Sedan, Wagon | RWD | 4.3L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 2-2.5 Inch |
| 1994 | Chevrolet | Caprice | Classic, Classic LS | Rear | Sedan, Wagon | RWD | 4.3L V8, 5.7L V8 | Lowering Rate: R: 2-2.5 Inch |
| 1995 - 1996 | Chevrolet | Caprice | Classic | Rear | Sedan, Wagon | RWD | 4.3L V8, 5.7L V8 | Lowering Rate: R: 2-2.5 Inch |
| 1964 | Chevrolet | Chevelle | 300, Malibu | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 3.2L L6, 3.8L L6, 4.6L V8, 5.3L V8 | Lowering Rate: R: 0-1 Inch |
| 1965 - 1966 | Chevrolet | Chevelle | 300, 300 Deluxe, Malibu | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 3.2L L6, 3.8L L6, 4.6L V8, 5.3L V8 | Lowering Rate: R: 0-1 Inch |
| 1967 | Chevrolet | Chevelle | 300, 300 Deluxe, Concours, Malibu | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 3.8L L6, 4.1L L6, 4.6L V8, 5.3L V8 | Lowering Rate: R: 0-1 Inch |
| 1968 | Chevrolet | Chevelle | 300, 300 Deluxe, Concours, Malibu, Nomad | Rear | Convertible, Coupe, Hardtop, Sedan, Wagon | RWD | 3.8L L6, 4.1L L6, 5.0L V8, 5.3L V8 | Lowering Rate: R: 0-1 Inch |
| 1969 | Chevrolet | Chevelle | 300 Deluxe, Concours, Concours Estate, Greenbrier, Malibu, Nomad | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 3.8L L6, 4.1L L6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1970 | Chevrolet | Chevelle | Concours, Concours Estate, Greenbrier, Malibu, Nomad | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 4.1L L6, 5.0L V8, 5.7L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1971 - 1972 | Chevrolet | Chevelle | Concours, Concours Estate, Greenbrier, Malibu, Nomad, SS | Rear | Convertible, Hardtop, Sedan, Wagon | RWD | 4.1L L6, 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1964 - 1965 | Chevrolet | El Camino | | Rear | Standard Cab Pickup | RWD | 3.2L L6, 3.8L L6, 4.6L V8, 5.3L V8 | Lowering Rate: R: 0-1 Inch |
| 1966 | Chevrolet | El Camino | | Rear | Standard Cab Pickup | RWD | 3.2L L6, 3.8L L6, 4.6L V8, 5.3L V8, 6.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1967 | Chevrolet | El Camino | | Rear | Standard Cab Pickup | RWD | 3.8L L6, 4.1L L6, 4.6L V8, 5.3L V8, 6.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1968 - 1969 | Chevrolet | El Camino | Custom, SS | Rear | Standard Cab Pickup | RWD | 3.8L L6, 4.1L L6, 5.0L V8, 5.3L V8, 5.7L V8, 6.5L V8 | Lowering Rate: R: 0-1 Inch |
| 1970 | Chevrolet | El Camino | Custom, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.0L V8, 5.7L V8, 6.5L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1971 - 1973 | Chevrolet | El Camino | Custom, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.0L V8, 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1974 | Chevrolet | El Camino | Custom, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1975 | Chevrolet | El Camino | Classic, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1976 | Chevrolet | El Camino | Classic, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.0L V8, 5.7L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1977 | Chevrolet | El Camino | Classic, Conquista, SS | Rear | Standard Cab Pickup | RWD | 4.1L L6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1978 | Chevrolet | El Camino | Conquista, SS | Rear | Standard Cab Pickup | RWD | 3.3L V6, 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1979 | Chevrolet | El Camino | Royal Knight, SS | Rear | Standard Cab Pickup | RWD | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1980 | Chevrolet | El Camino | Royal Knight, SS | Rear | Standard Cab Pickup | RWD | 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1981 | Chevrolet | El Camino | Conquista, Royal Knight, SS | Rear | Standard Cab Pickup | RWD | 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1982 | Chevrolet | El Camino | Conquista, SS | Rear | Standard Cab Pickup | RWD | 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1983 - 1984 | Chevrolet | El Camino | Conquista, SS | Rear | Standard Cab Pickup | RWD | 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1985 - 1986 | Chevrolet | El Camino | Conquista, SS | Rear | Standard Cab Pickup | RWD | 4.3L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1987 | Chevrolet | El Camino | SS | Rear | Standard Cab Pickup | RWD | 4.3L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1994 - 1996 | Chevrolet | Impala | SS | Rear | Sedan | RWD | 5.7L V8 | Lowering Rate: R: 1.5 Inch |
| 1978 | Chevrolet | Malibu | Classic, Classic Estate, Classic Landau | Rear | Coupe, Sedan, Wagon | RWD | 3.3L V6, 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1979 | Chevrolet | Malibu | Classic, Classic Estate, Classic Landau, Classic Sport, Estate, Landau, Police, Sport | Rear | Coupe, Sedan, Wagon | RWD | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1980 | Chevrolet | Malibu | Classic, Classic Estate, Classic Landau, Classic Sport, Estate, Sport | Rear | Coupe, Sedan, Wagon | RWD | 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1981 | Chevrolet | Malibu | Classic, Classic Landau | Rear | Coupe, Sedan, Wagon | RWD | 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1982 | Chevrolet | Malibu | Classic | Rear | Sedan, Wagon | RWD | 3.8L V6, 4.3L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1983 | Chevrolet | Malibu | Classic | Rear | Sedan, Wagon | RWD | 3.8L V6, 4.3L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1970 - 1972 | Chevrolet | Monte Carlo | | Rear | Hardtop | RWD | 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1973 - 1974 | Chevrolet | Monte Carlo | Landau, S | Rear | Hardtop | RWD | 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1975 | Chevrolet | Monte Carlo | S | Rear | Coupe | RWD | 5.7L V8, 6.6L V8, 7.4L V8 | Lowering Rate: R: 0-1 Inch |
| 1976 | Chevrolet | Monte Carlo | Landau, S | Rear | Coupe | RWD | 5.0L V8, 5.7L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1977 | Chevrolet | Monte Carlo | S | Rear | Coupe | RWD | 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1978 | Chevrolet | Monte Carlo | Landau, Sport | Rear | Coupe | RWD | 3.3L V6, 3.8L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1979 | Chevrolet | Monte Carlo | Landau | Rear | Coupe | RWD | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1980 | Chevrolet | Monte Carlo | Landau, Sport | Rear | Coupe | RWD | 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1981 | Chevrolet | Monte Carlo | Landau | Rear | Coupe | RWD | 3.8L V6, 4.4L V8, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1982 | Chevrolet | Monte Carlo | | Rear | Coupe | RWD | 3.8L V6, 4.3L V6, 4.4L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1983 | Chevrolet | Monte Carlo | CL, SS | Rear | Coupe | RWD | 3.8L V6, 4.3L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1984 | Chevrolet | Monte Carlo | SS | Rear | Coupe | RWD | 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 0-1 Inch |
| 1985 | Chevrolet | Monte Carlo | SS | Rear | Coupe | RWD | 4.3L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1986 - 1988 | Chevrolet | Monte Carlo | LS, SS | Rear | Coupe | RWD | 4.3L V6, 5.0L V8 | Lowering Rate: R: 0-1 Inch |
| 1968 | Oldsmobile | Cutlass Supreme | | Rear | Coupe, Hardtop, Sedan | RWD | 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1969 | Oldsmobile | Cutlass Supreme | | Rear | Hardtop, Sedan | RWD | 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1970 | Oldsmobile | Cutlass Supreme | | Rear | Convertible, Hardtop | RWD | 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1978 - 1979 | Oldsmobile | Cutlass Supreme | Brougham | Rear | Coupe | RWD | 3.8L V6, 4.3L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1980 | Oldsmobile | Cutlass Supreme | Brougham | Rear | Coupe, Sedan | RWD | 3.8L V6, 4.3L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1981 | Oldsmobile | Cutlass Supreme | Brougham, LS | Rear | Coupe, Sedan | RWD | 3.8L V6, 4.3L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1982 | Oldsmobile | Cutlass Supreme | Brougham | Rear | Coupe, Sedan | RWD | 3.8L V6, 4.3L V6, 4.3L V8, 5.0L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1983 - 1984 | Oldsmobile | Cutlass Supreme | Brougham | Rear | Coupe, Sedan | RWD | 3.8L V6, 4.3L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1985 | Oldsmobile | Cutlass Supreme | Brougham, LS | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.0L V8, 5.7L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1986 | Oldsmobile | Cutlass Supreme | Brougham | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.0L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1987 | Oldsmobile | Cutlass Supreme | 442, Brougham | Rear | Coupe, Sedan | RWD | 3.8L V6, 5.0L V8 | Lowering Rate: R: 1 Inch (78-87 YR) |
| 1964 - 1966 | Pontiac | GTO | | Rear | | RWD | 6.4L V8 | |
| 1967 - 1969, 1971 - 1972 | Pontiac | GTO | | Rear | | RWD | 6.6L V8 | |
| 1970 | Pontiac | GTO | The Judge | Rear | | RWD | 6.6L V8 | |
| 1969 | Pontiac | LeMans | Safari | Rear | Wagon | RWD | 4.1L L6, 5.7L V8, 6.6L V8 | Lowering Rate: R: 0-1 Inch |
| 1970 | Pontiac | LeMans | Safari | Rear | Wagon | RWD | 4.1L L6, 5.7L V8, 6.6L V8, 7.5L V8 | Lowering Rate: R: 0-1 Inch |