These enclosures will make adding 6x9 rear speakers to your classic truck a snap, and there's no need to cut or modify your cab or doors! These speaker brackets are designed to fit behind the seat in a standard cab truck. Sold as a pair. A direct bolt-in designed to accept select 6 in.x9 inch speakers (speakers are not included). These speakers will not fit if the gas tank is in the stock location behind the seat.