Mystery Ignition Box

If you use the points distributor, insure the ballast resistor is still wired in to reduce the coil current in normal running. That is the small white ceramic on the far left firewall (driver's side). Without it, your coil will get very hot. Some electronic conversions bypass the ballast (for stronger spark). Most electronic conversions in the 1980's were sold in the J.C. Whitney catalog. I bought a Crane Cams XR700 there. They had several choices for Mopar, but I don't recall any looked like your box, so likely it was a retro-fit from another manufacturer. If you later want electronic ignition, easiest (and even cheapest) is the $40 Ningbo "ready-to-run" distributor on ebay (Steve White Performance and others), but also need a $20 e-core coil for best spark. Another choice is a 1970's Mopar e-distributor triggering a GM 8-pin HEI module (many posts).