Our EFI Throttle Body Stealth Fuel System is intended to support the hot new trend of carburetor to EFI conversions using a 4-bbl style, single EFI throttle body. 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 System Kit includes 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.