5.9 Magnum opportunity

What's your budget?
On a tight budget, any EFI rated fuel pump that supplies the required 40 psi, I think it is, will work just fine. As others stated, if that fuel rail has a return line and regulator, you just run the return line back to your tank. If your rail has no return line provision, you can use the Corvette fuel filter that has a built-in regulator and return line provision.
Some do get away without a return line, but I have not done it that way. The trucks with no return line had a regulator and return system inside the fuel tank.
If budget allows, some companies offer new fuel tanks with in-tank electric pump system, so you just plumb it to your rail and add a regulator and return line.