1967-1972 Chevy/GMC Truck Under Bed Mount 255 LPH EFI TANK18 gallon capacity Supports up to 550 EFI (@ 60 PSI at 13.5 Volts / 10.4 AMP Draw) Size is 32-1/4" x 20-1/2" x 9-3/4" (including the mounting flange) Size is 28" x 20-1/2" x 9-3/4" (measured without the mounting flange)Features: Tanks are coated galvanized steel then powder coated silver for total corrosion protection; 255 lph fuel pump with hanger assembly gives you the fuel you need with in-tank quietness; Sender has NPT Supply and Return line ports for easy fuel line connection and a barbed vent fitting; Fuel level sender included with the correct Ohm range for your factory gauges;