Possibly Rev A that was recently and thoroughly electrically restored by the man himself Mike Bendinelli at Mesa in Petaluma.
I have a second Rev A chassis that is in work at Mesa at the moment.
Both are combos with their original Mesa branded EVL12M.
Also have a MKV Combo I bought brand new in Feb 2022.
Still trying to decide which I want to move along. Hard to decide, I'm taking my time with the decision.