47-55.1 Under bed gas tank with side feed?

[fauXGT]

Any GM EFI/TBI tank can work. Then it will be baffled, have return port, breather and can take a combo pump/sender. Then, say an in-tank Walbro or Aeromotive pump for longevity. In the tank, the fuel surrounding the pump will run cooler, so minimize the challenge of " how far can I go on this tank". It shortens the life of the pump.
I just went for the 'Tanks' 50 Chevy for size, EFI ready, custom sender capable for the Bosch gauge and filler location... and it was about the same as anything else new. I think cheaper than what some are charging for the custom between the frame aluminium AD Chevy truck tanks.