65amp wiring/trouble shooting

This is the original VR
Regulator part number from the 1973 parts Catalog shows it was used for all Chrysler alternators that year.
So your replacement is probably fine for the application. At least as fine as replacement parts are these days.
1671315970443.png

The 65 amp L/C listed in that book is a Leece Neville alternator, and thats why it gets a different regulator.