Last summer I swapped my buddies Capri over from an electric fuel pump to a mechanical pump and front mount fuel cell. The fuel cell I fabbed up from some .090" (i think) aluminum sheet we had at work. The car was able to make use of the extra blower speed at the time without running out of fuel.
Inner fenderwell where the cell was placed. I carefully plasma'd out the factory metal.
Here are some cell construction pics:
Cell in place:
I also upgraded the intake with new larger fuel rails: