Fits GM EFI Vehicles. This unit also has a 1/8" NPT accessory port for a fuel pressure gauge or fuel pressure safety switch. This unit includes everything need to professionally tie into the fuel system of most GM vehicles: billet aluminum distribution block, one 1/8" NPT X -4 AN swivel fitting, one 1/8" NPT X -4 AN compression fitting, and one 1/8" NPT hex plug.
