Electronic Ignition Conversion

I kind of wonder the same. I think many people use the stock points coil. However, the later coil for electronic ignition has a note about that, which may be a warning of some sort. It doesn't warn not to use it with a points ignition, so my guess is it has a little more resistance than the earlier coils.

Regardless, always carry a spare Mopar module and ballast resistor, since both are known to fail regularly. The later 4-pin module will work fine with your dual ballast wiring. It just doesn't use the 5 ohm ballast. That was required for the earliest transistor designs. The only reason they put a 5th dummy pin in replacement modules today is to not alarm buyers who have a 5-pin setup (dual ballast).