I have a 94 Cherokee XJ with a 242J behind a AW-4 automatic on the TC tag reads
242J
5209 8046
5 19 94 2
272

I also have a 231J with a tag that reads
231J
5209 9212
1 14 98 3
272

Are they interchangeable? I have a spare front xj driveshaft and it fits both outputs, although the cases do appear to be a little different, the 231 is from a wrangler with fixed outputs front and rear, as well as having one sensor in the front case half and another sensor on the back case half. the 242J has them both together on the back half. The shift linkage looks to be the same.
The 231J has 23 spline input, not sure about the 242J as it is my daily driver, Any help would be muchly appreciated as there is so much info on the net i get it buggered up trying to get it straight

 

Your 94 should have a 23 spline input as well but the Wrangler cases are clocked up a bit more than XJ cases so good chance it could hit your floor. I'm guessing it has a SYE since you said it has a fixed output in the rear.

 

Thanks Marc, I was wondering about that as well; the front ds I have fits so I may have got lucky and it may have with the SYE, it isn't a Hack n Tap, any idea how much more it is turned up?