Got a new Truck (new to me)

Yes. I don’t remember the exact details of the fitting we connected the fuel hose to in place of the stock pump but I do remember that we made it work! The sending unit has a large spiraled coil of 5/16 tubing that goes to the bottom of cartridge for a TBI return. It’s useful if you’re going to put a big external electric pump and a bypass regulator. There’s also a rollover/ vent valve built into the fuel pump cartridge assembly, too.