You mention a fuel cell. If it has a gravity fed sump, then you're just looking for and inline pump mounted lower than the cell that flows enough fuel for the power level. There are formulas out there for determining this. Basically it takes .5 lb/HR per horsepower. Build a little extra in for gravitational forces. And the flow rating needs to be correct at the pressure you intend to run. Wide open ratings aren't the whole story. As pressure goes up volume goes down. The 140gph pump mentioned earlier is a pretty well vetted number for your power level. Aeromotive makes a return regulator that many here use at carb pressures and comes with a spring to swap it to efi pressure if the need ever arises.
All that being said, the efi style in tank pumps are nice, and offer some advantage, at a cost of course.
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'65 Tempest 467 3650# 11.30@120.31
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