Thanks for the write up.
I would like to add that in my experience the rectifier/regulator modules on the alternators have been good when alternators have died on me in various SC's (300 and 400).
It is possible to take a different gen alternator and swap the existing rectifier module on to get up and running. By different gen, I mean 92-94 with the round harness socket and 95-up with the squarish. The rectifiers swap between alternators no problem, so it doesn't matter much if you get a used alt with the wrong plug if your rectifier is good.