I really don't know how to put this in a good order, but here goes. On my 87 F-150 that I'm currently putting a 4bt in; there are 3 fuel pumps a lift pump in each tank and an extra in the frame rail by the engine bay... Reading other threads it is my understanding people are using different pumps but is there any way to use the factory fuel system? Maybe just the lift pumps? Or all of them and a fuel pressure regulator with a return line? I'm just a bit confused and nobody around here knows what is right, so a little insight would be greatly appreciated 