Sumped tank or fuel cell?

As it is right now, pump is mounted on the frame rail near the rear bumper and the inlet side of the pump is at the same level as the middle of the tank. It could definitely stand to be lower on the rail, but it'll still need to pull fuel up through the pickup currently. I'll be fabricating a mounting plate to move it closer to the bottom of the tank, depending on whether I go with a weld on sump or a fuel cell.

As far as the feed and return line, I'm going off of Mallory's recommendations for sizing.

http://prestoliteperformance.com/Po...eshooting_fuel_system_size_4110_4150_5250.pdf

The fuel system may be a bit overkill, but I wanted to be able to support a stroker small block or big block if I decide to go that direction someday.