Thanks for the reply. I hadn't thought of going to the junkyard (which is odd, because this really is a junkyard, low buck build) for the fuel lines/parts.
As for the supply/return line, I do plan to use the factory suction line from the tank as the supply line for the new pump. I will be installing a new line into the tank to serve as the return line. What I meant was, I will be using the factory steel line that runs from the tank to the engine compartment as the return line, and running a new line up the passenger side of the car as a supply line.