These enclosures will make adding 6x9 rear speakers to your 67-72 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 of 67-72 standard cab trucks and are sold in pairs. A direct bolt-in designed to accept select 6”x9” speakers. 6"x9" speakers sold separately. (SPEAKER BRACKETS WILL NOT WORK IF GAS TANK IS IN STOCK LOCATION).