Getting the pump below the sump is a pain. Specially if its a stock tank. But... I think even stock modern systems with the pump in the tank are above the bottom level quite a bit. Unless they are sitting at the bottom, without a pick up tube.
I have an electric pump and fuel injection. I wanted the head pressure to always be there for the pump. So I mounted my pump below the sump.
A lil easier for me cause my 20 gal. tank is a cell mounted high. But look at my pictures. That huge tank hanging down is mostly air, prolly 6 inches. I surrounded the aluminum tank with steel to protect it from road debris. The reason the steel case is so low is I have two large filters and the pump inside of it, to the right, all enclosed and lower than the fuel cell, I didnt want those pieces out in the open either. I could have made the tank case smaller and made a separate case for the fuel pump and filters but it would have looked uneven and the pump case would have been just as low as it is now. I wanted the piece of mind knowing the pump was always under fuel. First concern for me with this car is dependability and driveability (SP?). It might look better when the bumper is on, who knows. JR
This is without the bumper. But see how far it hangs down, and Im flat on the ground taking this pic so you wont always be seeing this.
I have had the bumper on and it hangs down a lil lower than the top slice of this pic, the bumper hides the frame rails.
Fuel cell in the trunk.