My first mopar "stranded" moment with the HEI setup

A photo of the setup would help us comment, but would risk ridicule especially if one of the gomer'ed installations some have shown. One guy had loose wires strung all about with alligator clips. If you don't twist the wires from the distributor pickup and keep them short, you are asking for trouble, like "positive feedback" which could make the ECU self-destruct. Need a good heat sink and solid electrical ground (not rusty sheet-metal screws). The 8-pin GM module is simplest, and what TrailBeast kits. Use the GM cable and coil for simple & robust. But smart to carry critical spares. I have a Crane Cams XR700 (ca 1990's) on my 65 Newport, and lost spark on a Sunday drive. I had a spare points distributor in the trunk, but also a spare XR700 ECU, so the later was an easier swap and quickly got us home. BTW, the Newport has a big trunk (spare carb, ...).