[jmuck]

fuel lines are gonna be the easiest thing to do just buy regular steel or aluminum lines b/c stainless lines are so hard to bend and harder to flare.

I would suggest 3/8" aluminum lines and just bend it where you need it to go along the frame. You can actully do alot of your bends by hand with the soft aluminum lines. Use small pieces of rubber to make them connect or flare them and bolt them together. Rubber is easier with just a regular hose clamp. Does the tank have the fuel pump inside or are you running an external one? Let me know and I will help any way I can.