99% of fuel cells are bottom feed, just look at listing of fuel cells at jegs or summit.
Mine is in the trunk, with one feed line plugged (they usually seem to have two -8s, I change to one -10, out to a pump to the rear of the cell, (140gph trickflow in one car, 250gph Mallory gerotor in the other) then a fuel filter, then an aluminum 1/2 line to the dead head regulator. Stupid basic, but it works for me.