The engineers at Performance Online (POL) have expanded their classic truck product line by offering the 1st rear mount aluminum fuel tank for 1973-87 Chevy andGMC truck. These tanks are designed to fit between the frame rail and behind the rear axle.By eliminating the hazardous side saddle tank, you get cleaner body lines and added safety. Made of heavy gauge aluminum, these tanks offer a light weight design and are fully baffled