I'd forgotten about the MP repackaged MSD boxes. Quite a colorful collection there!
In the old Mopar Perf "talks" which MP's Larry Shappard presented at the 1980s Mopar Nationals, he mentioned the small steps they were making to get more repro parts into their portfolio of parts. He mentioned the voltage regulators in particular.
He said that they went back to the OEM blueprints and sought to get the original vendors to make them (as they also had all of the old blueprints and such in their stash). When the particular voltage regulators arrived, I realized something important to the repro people. The particular part number voltage regulator they came up with was the "number-changed, latest version" of that orig part number. Which meant it was the latest version of that older part number, which might not be exactly like the original one it replaced for the particular model year item. Just like would have been sold new by Chrysler Parts.
Take care,
CBODY67