Our EFI OEM Returnless Rail Stealth Fuel System is intended to support engines OEM “Returnless” fuel rails in any car or truck, early or late model. This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications. The kit includes our billet 3/8” Quick-Connect for most OEM fuel rails, along with all port fittings including fittings for the Stealth/Phantom pump, the X1 EFI regulator and fittings, the AN-06 Aeromotive filter with 10-m element, and our 0-100-PSI "Equalizer" liquid filled fuel pressure gauge.