Hei conversion troubleshooting

Thanks all for the tips. I did have a voltage drop, so I wired up a relay today, 12g wire direct from starter relay terminal. Did not fix the problem, seemed to get slightly better but still overall ran like garbage and backfired when rev'ed up. Timing light confirmed that ignition was cutting out sporadically, checked several different plug wires same problem.

The ignition module and coil are both grounded independently, and barely warm when this problem is occurring.

Next, I will test a new module, (this thing is brand new, if its bad what the hell).

The distributor is still my prime suspect, It is one of the R. Ehrenberg ebay ones and the reluctor wheel was really poor quality, all different lengths make it hard to gap properly. I did swap the pickup wires to check that, the car wouldn't idle and REALLY ran like garbage with them switched so that's not the problem.
I have already contact a FABO forum member to get a rebuild OEM distributor, but for now I'm trying to eliminate any other possible source of the issue.