I would simply cut the old fuel line at the point before it heads vertical to the old tank, use a compression fitting and splice in a new steel line along the frame and to the tank. You will have to wrestle with a steel line, but do not use copper. Or use stainless braided line, whidch is super $$$$ but easy to string out. Wires to the sending unit are no big deal as long as the sending unit is the proper ohm for your gauge. If quality is the most important thing to you, call Rock Valley.