1955-1959 Chevrolet / GMC 1/2-ton Truck 16 Gallon Aluminum Fuel Tank. 16 gallon capacity. baffled and is designed to work with a fuel cap on top of the bed for fuel filling. There is also a preset spot for the sending unit and two ports on the bottom of the tank for fuel injection (one of the port can be plugged as well for carburetor applications).