COMP Cams Valve Springs For 984-975XX (SUPERSEDED BY 26987) VALVE SPRINGS, 1. 430" FOR 984 975 User 1 This Part Fits: Year Make Model Submodel 1982 1989 Buick Century Custom 1984 Buick Century Estate 1985 1989 Buick Century Estate Wagon 1982 1989 Buick Century Limited 1984 Buick Century Olympia Limited 1980 1982 Buick Skylark Base 1983 1989 Buick Skylark Custom 1980 1989 Buick Skylark Limited 1980 1982 Buick Skylark Sport 1986 1987 Buick Somerset Custom 1986 1987 Buick Somerset Limited