I have a 63 3/4 ton pickup. When I got the truck the bellhousing and motor mounts were changed out to fit a v8, so please no roasting from the purist v6 guys.

So I rebuilt a sbc 283 and put in it, runs like a top, but I want to upgrade from the carburetor to gm tbi for better reliability and performance. The only problem is that I would need a return line back to the fuel. I just replaced the in cab tank two years ago along with the sending unit but its only got one line coming out of it. So here is the real point of this thread, Has anyone ever seen a sending unit with a return line hook up?