Fuel delivery is easy for us because we just installed a new gas tank from a 1990s Suburban, which had factory TBI fuel injection. We used a new AC Delco in-tank pump. In our experience these systems generally work better with in-tank pumps, but since they are low pressure you could get away with an external inline fuel pump like an e2000 (from a 1989ish Ford F-250. For an external inline fuel pump we usually run a clear prefilter between the tank and then a high-micron, fuel-injection-ready fuel filter ahead of the fuel pump. This helps keep the fuel pump happy and still filters the fuel for the fuel injectors.