Spectre SB Chevy Timing Tab/Pointer (Aluminum) - PolishedSpectre's timing tabs have an adjustable timing pointer to allow for a more accurate reading and they can work with any size harmonic balancer. Designed for Chevy small block engines, Spectre's adjustable timing tabs have a polished aluminum finish so it will look great under your hood. This Part Fits: Year Make Model Submodel 1977,1980 Buick Century Base 1977 1979 Buick Century Custom 1980 Buick Century Estate 1978 1980 Buick Century Limited 1978