Some ignition questions

Hi, have not been on site for awhile....poor Valiant has taken the backseat for awhile, just lookin pretty in the garage with electrical gremlins it has a 360 with orange module electronic ignition. Started having quiting issues with no spark, very random.....first thing I checked stopped me right there and has taken quite a bit of spare time to repair.....firewall plug was burnt up bad on battery and alt connections especially. Well I've finally got all wiring and plug replaced, along with all new wiring under hood with the exception of the headlight,turn signal,horn harness as it was in fairly decent shape. All wiring going through firewall under dash is now hardwired with no plugs as well as head lights, ignition and ballast resistor bypass are all on relays under the hood with direct battery power on them to power the points in them. Also replaced 5pin ignition harness with a new Mopar replacement from Jegs. So all should be good right?? Not yet....no spark issue still has come up.....again very random, great voltage to coil and orange module, pick up coil in distributor ohms out at 350ohms...seems ok even though I have read 300-900 good and others say 600-1500 ?? Replaced ignition coil with another 1.5 ohm Petronix coil....that was not the problem.....like another member on here had with his orange module it seemed when I unplugged and plugged back in the 5pin harness spark would be back, leads me to believe the module is the bad guy here. So for trouble shooting purposes I picked up a low cost 4 pin GM HEI and wired it in as I have seen here on FABO, just to see if issues would go away......I could not get it to work period....got spark if you want to include backfiring, LOL.