[RustyPile]

When I bought my '71 six years ago, it had a Holley electric fuel pump, to use your words, "cobbled in". Mounted on the frame rail right under the passenger seat, noisy as all get up.. I removed all the plumbing and wiring, installed all new metal fuel lines -- delivery and return -- and a proper mechanical fuel pump.. I put the inline fuel filter just ahead of the pump inlet.. Been that way for a few years and works flawlessly..

I'll offer this suggestion... Even if your truck wasn't originally equipped with a fuel return system, add it at this time.. Today's ethanol ladened fuel is prone to vapor lock on a low pressure carburetor fuel system. A return line will all but eliminate this.