Lots of good information here! So, over the weekend I came across a youtube video of a guy with his 86 4x4 MM that he put a 4g63 in. It was also a macrocab! I think this is what I am looking for. Can anyone verify that the 86 macrocab came with a narrow 4x4 transmission? I dont know if he did a transmission swap with the engine. If I have to go with an older model to check all of my boxes thats ok with me.

heres the vid:
https://www.youtube.com/watch?v=2BX9lwMcoH0