[SpeedracerIndy]

Thanks guys. I think the nut is definitely trashed too, but the shaft is repairable. My bearings are a little rough too, so I priced a rebuild at the local auto electric shop. It would be around $100 for both bearings and brushes, etc. I found the same alternator with a nut and external regulator in the classifieds for $100, so that's what I am doing. now I'll have a spare that I can have rebuilt at another time.

I wish I had known how hard it is to find a 16x1 alternator nut before I pounded the alternator out of the housing and it smacked the concrete! I didn't expect that thing to come out so quickly, lesson learned.