1990 Renix will a 42RLE bolt up and whats involved?

I have a Xjuggy with teh 90 renix stuff. I am buying a atlas and have to get a new tranny one way or the other. I am interested in the 43RLE and looking for any assistance as to what I am in for if I do go that route over say a 1995 AW-4 swap.

Anyone have any insight?

Thanks

if youre talking about the tranny 42rle in the libertys the only thing i know is that a girl at work just had to replace hers after like 70k. i think its because her tranny cooler went out on the way to tahoe and she drove it hard all the way there and back. anyway, thats my .02
id personally keep the aw4 over the 42rle. also you need to think about the computer and electrical stuff swapping over as well