A500

Well, unless it's a V6
But I haven't had eyes on one of those either,lol
What I'm saying is the 3.9V6 has the same bell house pattern as all SBMs. So it could be possible to put an A500 on a V6. Whether or not they were born with one I cannot say. But in any case, I would suspect that if Chrysler did built an A500 for V6 use, that it would have light duty parts in it. Pure conjecture.
That's is my understanding, it is the same trans but not as strong internals. I'm gonna keep looking at threads on here and elsewhere before I do anything. I'd like to find some updated info on the crossmember and driveshaft availability.