It should be the G.M. DELCO CS-130, I do believe. Every one of mine has had them, and that is what I got as replacements for the first couple of times that they went bad. I think that Jeep started using the MoPar alt. in about 95-96.
As a note the earlier Delcos were mostly the 10 SI. 12 and 15SI are the heaver versions. Also the CS version used was the 130. (my personal favorite.) were lucky that Jeep went to nippondenso, the next generation of Delco alternators sucked! The CS 130D. Like I said just a note.
kim