Don,
Dave Dalke modded the fuel pump mount assembly to hold two pumps side by side with the 2nd pump positioned about 1/2" lower than stock. The fuel level float/sender had to be modded to clip onto a baffel in the tank instead of being attached to the pump mount, but it seems to be working fine.
It did require running a 10 gauge power supply wire from the battery to under the rear seat and a dedicated relay that was triggered by the original power wire to the pump. That way the pumps are still being controlled by the EEC and the inertia safety switch is still functional.
We ran dual 6AN braided supply lines and a single 6AN return line. We also moted an aeromotive universal regulator near the drivers side firewall (same place as clutch master cylinder for 5 spd). My main concern with doing it this way, is the possibility of sucking the well dry ot WOT and hard acceleration, but if the tank level is kept over 1/2 full that shouldn't be a problem.
I didn't take any pictures of the dual pumps before installing, but there are a few pics of the tank, lines, filters and regulator in this thread.
http://www.sccoa.com/forums/showthread.php?t=48391&highlight=turbo+motor+install
David