Here is a pic of my completed (finally) fuel tank. It started with a plain HDPE plastic tank and well weathered aluminum box. It uses -8 fuel pick-up and -8 return lines and can be upgraded easily to house an in-tank pump in the future if needed, currently im using an external pump. It will fill from the right rear fender using the '68 Mustang filler pipe and full size Lemans flip top cap.