Thanks Archie. I found a YouTube online for a company in Knoxville TN who makes billet-style alternators (
www.mechman.com). Since they were US made, I gave them a call - interesting conversation. Short of it is that they would be happy to make me a reasonably priced alternator, but for my use - 6-golf cart batteries, he said that the Balmar's multi-stage charging was the gold standard (FYI - they do not sell Balmar, so a credible statement). As he put it, their alternators are for cars with a lot of accessories and are made to "fill a hole as quickly as possible." In the past, a knowledgeable person recommended Leece Neville large frame with an adjustable regulator, however I was unable to find one for older GM-style mount. In the end, may just bite the bullet with Balmar.