Dave,what I would suggest is to redo the sending unit to 3/8 tubing,spend the extra cash on some 3/8 braided flex line(easier to screw to the frame with wiring clamps) and is also a insulator to heat and the cause of vapor lock.You run the mechanical fuel pump for either a 6pack small block,or a carter after market unit.make sure you run insulated line to the carb and clear fiters at the carb to check for fuel and dirt.If you wish you can have a regulator if you want,depending on the look you want,you may want a stock look.IF,at any time you see your self running out of fuel,you can install a inline electric pump at the back with little problems.I have even gone to the piont of running a gas cooler up front,in front of the rad and back into the engine bay to the carb.Think of some of this and email me back,Mrmopartech