Fits 1955 1957 Chevrolet Full Size Exhaust System 63056 heat shields GMC K2500 (1990 1995) J8132372 CRN GMC K2500 (1990 1995) This in tank fuel pump module is a high pressure unit that flows 255 liters per hour (LPH) and is capable of supporting electronic fuel injection (EFI) engines producing up to 550 horsepower Fuel pressure is internally regulated to 58 psi eliminating the added expense and effort of purchasing and installing an external fuel pressure regulator no separate return line is required because this module returns excess fuel right inside the tank Comes with quickflow mufflers Shipping is free if you opt for cut pipes