We choose to use the 4th Gen F-Body LS1 fuel pump for this conversion. It's quiet, durable and a proven Delphi pump. We prefer in-tank over external pumps. It also has a built-in fuel regulator , so there's no need for a return line. The assembly has a built in bucket around the pump to contain fuel during fuel shushing. "Auto crossing" The assembly is easily available.
Warning: Treat gas tank before cutting or welding. Before cutting or welding a fuel tank, fill it with water to drive out any lingering residue or vapor. Many explosions have resulted from using a torch on a tank that was thought to be empty.

#1. The Adapter requires a 3.875" hole cut out of the tank. #2. Position the fuel pump & mark the location of the lower bracket.  #3. Weld the lower bracket to the tank. Only 4 good tacks are needed to do the job. #4. Add the GM Gasket pump seal.( We used the OE pump rubber gasket to seal the pump to the gas tank) #5. Position the top clamping plate over the 4- 1/4" 28 studs to clamp the top bracket to sandwiched the 4th Gen LS1 Pump. #6 Connect the AN fuel adapter (available through Vetteworks). #7 Final tank assembly.

NOTE: The output feed of the pump must be connected to the return line For the regulation to work. The line is then teed off to feed the plenum. ( see picture #6)

 The F-Body fuel pump assembly has about 1" height adjustability. Set up works very well.

New pumps and harnesses available soon.

Disclaimer: Vetteworks remove itself of all liability in posting this information. The person who will ultimately decide what to do with their tank is the sole person responsible for any accidents that may or may not occur in the event of an accident while using any of the products, techniques or any of the information posted.