I agree, this thing looks pretty good. The transmission is an ax-15. http://www.novak-adapt.com/knowledge/ax15.htm It is a great tranny that was in all kinds of cars in the 90's from Dakotas to supras. The only problem they really had was if someone changed the fluid with GL5 rated fluid (diff gear oil) instead of GL4 (trans gear oil). GL5 is what is commonly available, and cheaper, somost people just grab that when they are in the parts store. The problem is GL5 has graphite in it, which is fine in an all steel rear end, but it eats the delicate brass synchronizer gears in the tranny very quickly, usually within a year or so. When you drive it, pay careful attention when shifting for a grinding. Make sure it doesn't grind going into any gear when upshifting or downshifting (except reverse). Make sure it doesn't have any exhaust leaks( they are known for cracking manifolds). Listen for any bearing noises that make a constant whirring noise only when the jeep is moving (usually around 30-50mph). Make sure 4 high and 4 low both work as they should without any noises. Pay attention for a burning oil smell, the 4.0 is known for the rear main seal dripping oil onto the exhaust pipe. Poke your head under it. Look for any oil drips. Look at the pinion seals on the front and rear diffs ( where the driveshafts attach to the diffs). Make sure there aren't any leaks there. If there are, it is a sign that the pinion bearings are worn, which is expensive to fix.Doesn't look too bad. If you take good care of it you will never have issues with that engine. Just test the transmission out. Chrysler had some issues with the automatic transmission for the 4.0L jeeps in the 90's, but I'm not sure if this applied to the manuals. 95% of the problems were basically from bad transmission fluid which has since then been fixed when they switched over from Mercon/Dexron to ATF+4 fluid.
