Budget Build 5.9 for a 71 Scamp

Don't worry about the noise of an electric fuel pump. I'm running an external Walbro 255 lph unit and I can just barely hear it priming at key on. Definitely can't hear it over the Flowmaster when the engine starts. If you want quieter, you can put a pump in the tank pretty easily. There's no need to spend hundreds on a fancy fuel tank; there are a lot of pumps that will fit through your factory sending unit opening.