Front/Rear Speakers + 12″ Powered Subwoofer for 1995-06 GM C/K Sierra-Silverado
Cerwin Vega VPAS12 Under Seat Powered Subwoofer Enclosure The GMSB345 Pair of Speaker Adapter kit is designed specifically for select 1995-up GM C/K Pickup (Silverado/Sierra) Extended Cab. These hard plastic brackets allow for the installation of 6-1/2″ speakers in your vehicle.
