BENSON Tuning Full T304 LS Engine Conversion Swap Long Tube Headers for ChevyFITMENT: MAKE MODEL: Buick Regal YEARS: 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987 TRIM: LS ENGINE SWAPS ONLY, Will not fit the OEM motor MAKE MODEL: Buick Skylark YEARS: 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 TRIM: LS ENGINE SWAPS ONLY, Will not fit the OEM motor MAKE MODEL: Chevy Bel Air Boscayne YEARS: 1965, 1966, 1967, 1968, 1969, 1970,