Up to 1993.5, the ZJ 4.0 came with the AW4.
I believe that is correct. The renix TCUs all had grey connectors and can be interchanged. There might be subtle changing in the shifting maps, but they can be swapped. The HO TCUs all had green connectors, and red seems to correspond to the Chrysler made trannies.
They interchange. As you stated, shifting differences along the line. I believe in 1987 they shifted 1,2,3 lock converter, unlock converter as it went to OD, lock converter in OD. 1988 and later shifted 1,2,3,OD, lock converter.