How's the fluid level? I could be wrong, but if that's the same transmission that the old Jeep Grand Cherokees used, I think it's fairly cheap to rebuild. Also, worst case, you may find a low mileage one from the rust belt, like Maine where salt eats trucks like crazy.
Inertia Spartan + cam, Circle D 3,000 stall ,Sonnax line pressure booster, MagHytec 68RE pan,and differential cover, Vararam, JBA's with cut outs, Rancho 9000's, Helwig rear sway bar,3:92's, extra rear leaf,Line-X Bedliner,GY Armortracs, 245,000 miles To Hell and back. 14.2/96 mph NEDW