HELP! Randomly no spark!

I have a 1972 Dodge Demon 340 with Mopar electronic ignition... starts up greats, runs beautifully, but while driving it will randomly shut off every once in a while and will no longer start due to no spark. This usually occurs once it has come up to temp BUT it doesn’t happen all the time. It is very random, with no indication of issues, seems like it just suddenly shuts down. It does not stumble or act as though it is flooding out or starving for fuel, it just seems like someone turns a switch and shuts it off. Sometimes it will start right back up, other times it has to sit and cool all the way back down. The engine has not ever run hot, once up to temp it maintains a steady 180 degrees. The carb is getting fuel, but it definitely is not getting spark when this issue occurs.