Product Features: From our expanded online assortment; not available in all Best Buy stores, Compatible with select vehicles Including 1988-1994 Buick Regal and Chevrolet full-size trucks, 1988-1989 Pontiac Grand Prix and 1984-1994 Pontiac Sunbird models for a customized fit. Ensures proper installation For the connection of an aftermarket radio. ABS plastic, copper, vinyl and aluminium materials Offers strength and durability. TUNER BYPASS 48.