What are the most likely Donor vehicles for the A 500 4 speed automatic?

moparmarks said
I thought so too but why did this 93 have an RE?

How do you know it was an RE?

If it was, best guess is someone was doing or did an OBD2 swap on it. There simply isn’t anything to control it otherwise, the SBEC has absolutely nothing beyond OD and LU. Or they were running a full manual VB.