Works with LS1, LS2, LS6, LS7 engines. Buick Regal 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987. Chevy Caprice 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992.
