I went on the advanceautoparts.com site as it's a good tool for .... When you click on a particular alternator, there's a link called "buyers guide" that will tell you all this will fit on. Many had no data. I saw that Autolite manufactures Delco-type alternators, and when I clicked on it's buyers guide, it came up with many makes and models, including AMC.
Woah. That's a nice feature! Thanks for the tip -- I'll save that one.