Casey,
There’s that chart again I posted in my for sale ad! Thanks to Tom Butler here for creating that.
I also thought of the internal vs external voltage regulator issue after we spoke. Here’s a link to a tech bulletin (see page 116) with some details on the upgrade to the internal regulator.
https://drive.google.com/file/d/0B7Bo-8bAu9G9VlZDY04xMzdOSEk/view?usp=drivesdk
Need to find out if your setup is older external regulator or has been updated to internal style already mounted within alternator