I plumed a prime port on my fuel line right by the take buy putting a tee in and some valves. A clicky clacky works till it hits pressure but I was using a super duty fuel pump that will pump past the spring. My fuel tank is from 1954 and has problems so I put in a fass lift pump for a 6.4 diesel and that has fixed a ton of problems with the tank. I hope to be finally replacing the tank in the next coming weeks.