EFI FUEL SUMP PUMP SYSTEM ?

Your best bet is to just put a pump in the factory gas tank. There are kits from Holley that drop right in. The regulator is internal to the tank so you don't need a return line. The surge tanks mounted in the engine compartment are a hassle. That was a concept that seemed like a good idea originally but once people started making drop in pump assemblies for older cars the surge tank approach hit a dead end.