Again if my memory is correct. The original regulators for the single field wire alternators were mechanical (had points inside) and were electrically "noisy". The later regulators were electronic and had a much "cleaner" output, and better regulation. The Mopar "race" regulators, and the marine regulators were electronic, but were direct replacements for the mechanical regulators. These worked better with the Mopar OEM electronic ign systems when they were installed on the earlier cars.
