There is somthing different in the TJ 30. But what it is i cant remember. Grab your qtec mag and look for the carrier part number under the CJ and the TJ. If they are the same part number then they are the same carrier.
The carriers are the same for the CJ, YJ and TJ dana 30.
I think the TJ dana 44 rear used a thicker than normal ring gear for a lower ratio to stretch the range the carrier could use but I don't remember reading/hearing anything different being done in the front.