Pressure regulator return line

[1973charger]

Question…
I want to know where at the gas tank I can hook up my pressure regulator return line. There are five fuel lines on the back side of the tank. 4 of them I’m guessing are evap lines and the 5th one is an abandoned line that terminates where the evap line terminate. Could I use that line for the return line?
I will try to upload pictures… I’m new to the forum/site.

Any help would be greatly appreciated.

[Nacho-RT74]

Hi! The return line goes straight to the fuel sender. Cars with return line set as HP with 440 using 3/8" fuel line, while "non HP" used 5/16" fuel lines. So the fuel sender is acomodated to this configuration. You will find 5/16" fuel senders without the return line provison and 3/8" fuel senders with the return line provision (1/4" tee)