The OEM Chrysler electronic ignition was phased out and was replaced with the lean burn system. The lean Burn started in 76 or 77 and was pretty much the only choice from about 79 on, until the "new computer system" replaced it.

I suspect 77 or 78 was probably the last factory original electronic ignition systems used, so its not been installed on "new" cars for 45 or so years. Funny thing, the OEM Chrysler electronic ignition system had about a 15 year run as the only factory ignition system since it replaced the points and condenser system, but most of the guys here still are in love with the points, they have not been installed on "new" cars for nearly 60 years.