Yeah my car came externally regulated. I don't thikn they went internal till 73. I may be wrong. The alternator is a regular internally regulated unit.
I also had it wired like this: Bat terminal to the #2 end of the connector and the #1 going to the battery positive. It was showing 12.7 at the battery like that, which is a couple tenths higher than the way it's hooked up now. But that's definately not charging correctly, if at all.