electric fuel pump on demon

FYI even the steel braided line INSIDE the wheel well is not a good idea, and you won't pass tech at the drag strip if you have a good inspector. blown tire = a shredded line, spitting 90GPH of fuel, onto a sparking ignition source.

to the OP, if you are set on electric over a good mechanical (on a street car i'd stay mechanical). If you use a rotor pump like the holley, you sometimes have to run a check valve on the front of the pump to keep the fuel in the lines. these pumps are pushers not pullers. they usually can't siphon fuel up and over the factory sender. the check ball keeps the fuel in the lines, so you have fuel in the pump to continue the draw next time you flip it on.