Originally Posted by broken-wrangler
So I just bought a complete drivetrain out of a 96 Cherokee with only 20k for $800 bucks. I have a np231 in my yj with a SYE already but that stupid thing will not stop leaking no matter how many times I've gone through it, nor will it stay in 4wd no matter the linkage setting. First question is will my ax15 bolt up to it cause its off a automatic? And second with my SYE kit fit in the 242. Also is it a better tcase to use?
No, your SYE will not fit the 242. You should be able to take your input shaft out of your 231 and put in your 242 but they would have to be within the same few years of each other. The cut on the sun gear inside the 231 case changed during it's production sometime in the early 90's, but don't remember what year. A good resource is Advance Adapters. They can tell you about anything you want to know regarding the subject of the internals. But as mentioned above, your SYE will not fit and your input gear may..but it's a crap shoot. I know this....cause I tried, just fyi :-)