For all Holley MPI / TBI / Terminator EFI systems up to 600 HP GM Gas " Rough Country's 4" Ford Suspension

Rough Country's 4" Ford Suspension Lift System is backed by our Lifetime Replacement Warranty

With our engineering on the XP Series K16 pumps you can produce more fuel output with less pumps

Then returning the fuel

The Stage 6 package includes a Co-Pilot Transmission Lock-up Controller

For all Holley MPI / TBI / Terminator EFI systems up to 600 HP GM Gas " Rough Country's 4" Ford SuspensionThis kit is designed to allow the use for all Holley MPI TBI Terminator EFI systems on vehicles equipped with dual fuel tanks. The fuel injection systems require a fuel return line. In dual tank applications, the fuel must be returned to the tank from which it was drawn. Originally designed for all TBI 4 bbl Pro Jection and 950 MPFI 4 bbl TBI systems.