Got 2 Denso alts at JY sale over the weekend. This 90 which I believe is internally regulated:
[Linked Image][Linked Image]
And this 120 amp - this one internal regulated or not? I was thinking it is not and I would use current electronic reg in my '74 - what is that black box shaped component at the bottom of the alt? Thanks, I would maybe use this 120 I guess (from a late 80's Dakota).

120 amp:
[Linked Image]
[Linked Image]