How many miles? I'd bring a spare battery and check out what you can like computer codes, lights, accessories, t-case shift motor etc. Also if you have access to check condition of fluids like coolant, tranny t-case, diff, etc. that would be good.
Sounds like a good deal if all you need extra is to rebuild the motor. Even if that's an extra grand or more you're still well under what those trucks are going for at dealers around here. If the block isn't shot you might get off cheaper. Depends I guess too on what you plan to do with it. If you're going to tear into it anyway it's probably a good foundation. For a reliable driver it can be dicey getting in to something you can't test drive.
I'd be curious how you like the 3.0 vs the 2.3. I've had a couple 4 banger gen1's and they're torquey little guys. I won't bag on the 3.0, but I passed up several last summer when I went shopping for a 95-97 4x4 and picked up a 4.0 instead. I really like those years for the combination of features - newer body & interior style, ttb up front, 4 wheel abs, etc.
Good luck