I'm with you on your view that the problem is fuel; the ignition suggestion was to eliminate that area.

Does the car have one fuel pump or two? If two, are both running?

The previous suggestion to check for fuel at the injectors (lines cracked) while simultaneously moving the fuel dist. plunger, was to ensure that fuel was moving through the metering slits and upper chambers. You might also try cracking the fuel lines at the FD. While all these checks are being done it is necessary (obvious!) to have the pump(s) running and if possible have a gauge connected to the upper fitting of the FD (system pressure). Bridging the pump power at the relay socket ensures that the pump runs while doing checks.