Holley In-Tank RetroFit Fuel Module-Returnless Style - 225lph H777C04XXL For superior flow capacity

For superior flow capacity

Universal Fitment 3 Pinion Shim for 2

regardless of wall thickness

Standard Chevy Bolt Pattern

GTO 1964-67

Holley In-Tank RetroFit Fuel Module-Returnless Style - 225lph H777C04XXL For superior flow capacityAre you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes. Now you can convert your factory tank or fuel cell to an in tank EFI fuel system quickly and easily! And add the benefits of a Holley Hydramat in