Looks pretty good but you need to find out some things.
First, it has a AMC V8 which isnt factory. What size is it and what tranny is behind it. Also does the wiring, etc. look ok
Second, does it have the dana 44 rear axle they put in some of them in '86 only?
Third, I would want to know axle gearing and if it has any lockers.
Fourth, is it a fiberglass or steel tub? Any rust? I expect it doesn't.
12k around here is pretty good chunk of change for a CJ. It has several upgrades I can see. Bumpers, wheel/tires, interior stuff. But I would want to know what you can see as easy.