1977, 1982 Buick Regal (RWD; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering 2-Door); 1978-1981, 1983-1987 Buick Regal (RWD; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1991 Buick Roadmaster (RWD; SN4 - Fits Vehicles with 1"-3" Rear Lowering); 1992-1996 Buick Roadmaster (RWD; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering; SN4 - Fits Vehicles with 1"-3" Rear Lowering); 1964, 1967 Buick Skylark (SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1965 Buick Skylark (3.7L V6 / 4.9L V8 / 6.6L V8 only; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1966 Buick Skylark (3.7L V6 / 4.9L V8 / 5.6L V8 / 6.6L V8 only; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1968 Buick Skylark (4.1L L6 / 6.6L V8 / V8 only; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1969 Buick Skylark (4.1L L6 / V8 only; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1970 Buick Skylark (4.1L L6 / 7.5L V8 / V8 only (Base / Custom); SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1971 Buick Skylark (4.1L L6 / 7.5L V8 / V8 only; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1972 Buick Skylark (5.7L V8 / V8 only (Base / Custom); SN12 - Fits Vehicles with 0"-1.5" Rear Lowering); 1992-1996 Chevrolet Caprice (RWD; SN12 - Fits Vehicles with 0"-1.5" Rear Lowering; SN4 - Fits Vehicles with 1"-3" Rear Lowering); 1964-1965 Chevrolet El Camino (listed for some trims/engines only); 1966 Chevrolet El Camino (listed for some trims/engines only); 1967 Chevrolet El Camino (listed for some trims/engines only); 1968-1969 Chevrolet El Camino (listed for some trims/engines only); 1970-1972 Chevrolet El Camino (listed for some trims/engines only); 1973 Chevrolet El Camino (listed for some trims/engines only); 1974 Chevrolet El Camino (listed for some trims/engines only); 1975-1976 Chevrolet El Camino (listed for some trims/engines only); 1977 Chevrolet El Camino (listed for some trims/engines only); 1978 Chevrolet El Camino (listed for some trims/engines only); 1979 Chevrolet El Camino (listed for some trims/engines only); 1980 Chevrolet El Camino (listed for some trims/engines only); 1981 Chevrolet El Camino (listed for some trims/engines only); 1982 Chevrolet El Camino (listed for some trims/engines only); 1983-1984 Chevrolet El Camino (listed for some trims/engines only); 1985-1986 Chevrolet El Camino (listed for some trims/engines only); 1987 Chevrolet El Camino (listed for some trims/engines only); 1958 Chevrolet Impala (listed for some trims/engines only); 1959-1960 Chevrolet Impala (listed for some trims/engines only); 1961 Chevrolet Impala (listed for some trims/engines only); 1962 Chevrolet Impala (listed for some trims/engines only); 1963 Chevrolet Impala (listed for some trims/engines only); 1964 Chevrolet Impala (listed for some trims/engines only); 1994-1996 Chevrolet Impala (listed for some trims/engines only); 1964 Chevrolet Malibu (listed for some trims/engines only); 1965-1966 Chevrolet Malibu (listed for some trims/engines only); 1967 Chevrolet Malibu (listed for some trims/engines only); 1973 Chevrolet Malibu (listed for some trims/engines only); 1974 Chevrolet Malibu (listed for some trims/engines only); 1975 Chevrolet Malibu (listed for some trims/engines only); 1976 Chevrolet Malibu (listed for some trims/engines only); 1977 Chevrolet Malibu (listed for some trims/engines only); 1978 Chevrolet Malibu (listed for some trims/engines only); 1979 Chevrolet Malibu (listed for some trims/engines only); 1980 Chevrolet Malibu (listed for some trims/engines only); 1981 Chevrolet Malibu (listed for some trims/engines only); 1982-1983 Chevrolet Malibu (listed for some trims/engines only); 1970-1972 Chevrolet Monte Carlo (listed for some trims/engines only); 1973 Chevrolet Monte Carlo (listed for some trims/engines only); 1974 Chevrolet Monte Carlo (listed for some trims/engines only); 1975, 1977 Chevrolet Monte Carlo (listed for some trims/engines only); 1976 Chevrolet Monte Carlo (listed for some trims/engines only); 1978, 1980 Chevrolet Monte Carlo (listed for some trims/engines only); 1979, 1981 Chevrolet Monte Carlo (listed for some trims/engines only); 1982 Chevrolet Monte Carlo (listed for some trims/engines only); 1983 Chevrolet Monte Carlo (listed for some trims/engines only); 1984 Chevrolet Monte Carlo (listed for some trims/engines only); 1985 Chevrolet Monte Carlo (listed for some trims/engines only); 1986-1988 Chevrolet Monte Carlo (listed for some trims/engines only); 1978 Oldsmobile Cutlass Calais (listed for some trims/engines only); 1979, 1982 Oldsmobile Cutlass Calais (listed for some trims/engines only); 1980-1981 Oldsmobile Cutlass Calais (listed for some trims/engines only); 1983 Oldsmobile Cutlass Calais (listed for some trims/engines only); 1984 Oldsmobile Cutlass Calais (listed for some trims/engines only); 1982 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1983 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1984 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1985 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1986 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1987 Oldsmobile Cutlass Ciera (listed for some trims/engines only); 1980-1981 Oldsmobile Cutlass Cruiser (listed for some trims/engines only); 1982 Oldsmobile Cutlass Cruiser (listed for some trims/engines only); 1983 Oldsmobile Cutlass Cruiser (listed for some trims/engines only); 1987 Oldsmobile Cutlass Cruiser (listed for some trims/engines only); 1978 Oldsmobile Cutlass Salon (listed for some trims/engines only); 1979 Oldsmobile Cutlass Salon (listed for some trims/engines only); 1980 Oldsmobile Cutlass Salon (listed for some trims/engines only); 1985-1986 Oldsmobile Cutlass Salon (listed for some trims/engines only); 1987 Oldsmobile Cutlass Salon (listed for some trims/engines only); 1968-1970 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1978, 1980 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1979 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1981 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1982, 1984 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1983 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1985 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1986 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1987 Oldsmobile Cutlass Supreme (listed for some trims/engines only); 1968 Oldsmobile Cutlass (listed for some trims/engines only); 1969-1970 Oldsmobile Cutlass (listed for some trims/engines only); 1978 Oldsmobile Cutlass (listed for some trims/engines only); 1979 Oldsmobile Cutlass (listed for some trims/engines only); 1980 Oldsmobile Cutlass (listed for some trims/engines only); 1981 Oldsmobile Cutlass (listed for some trims/engines only); 1969-1972 Pontiac Grand Prix (listed for some trims/engines only); 1964-1966 Pontiac GTO (listed for some trims/engines only); 1967-1969, 1972 Pontiac GTO (listed for some trims/engines only); 1970-1971 Pontiac GTO (listed for some trims/engines only); 1964-1967 Pontiac LeMans (listed for some trims/engines only); 1968 Pontiac LeMans (listed for some trims/engines only); 1969 Pontiac LeMans (listed for some trims/engines only); 1970 Pontiac LeMans (listed for some trims/engines only); 1971 Pontiac LeMans (listed for some trims/engines only); 1972 Pontiac LeMans (listed for some trims/engines only)