Our EFI Dual Rail Stealth Fuel System is intended to support a return style, dual-fuel rail (V-6 or V-8) EFI application equipped with aftermarket fuel rails using AN-06 connections. 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 provides all port fittings including fittings for the Stealth/Phantom pump, an AN-06 Y-Block, 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.