The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Another Gas Tank upgrade question?

IF a guy chooses to relocate the in cab fuel tank to an underbed tank does he need an electric fuel pump or is the original pump from the straight 6 motor sufficient?

and

The sending unit needs to match the ohms of the original sending unit or are there options here?

I amm considering buying a set of Dolphin Gauges so I am not exactly sure what would be involved with the switch since the gauge in the truck now is never correct.

A factory mechanical fuel pump is completely adequate for a rear mounted tank. The gas gauge sending unit needs to match the gauge. If you go with Dolphin gauges just buy the compatible sending unit. I have seen other threads discussing options to run the stock gauge with a aftermarket sender, but requires an understanding of electronics.

Before investing in Dolphin gauges however you may want to do search for user opinions. I've read about several unhappy customers. Here's one I could find easily:

http://67-72chevytrucks.com/vboard/showthread.php?t=312195&highlight=dolphin