1976 Dodge Mobile Traveler transmission - how many gears?

The Mopar ignition system from that Era was notorious for failing. Most times, it was the resister that would burn out.

In my case, it was the resistor, the coil, the ignition module, etc. It would just fail to start at random times.

The GM mod replaces the mopar ignition module and resistor (which provide a stunted spark to the distributor) with a GM module only (full spark). So you eliminate the two most common culprits of failure.