This is a running M-151, though it is certainly dirty.

“I am selling my jeep because I have to many toys and some have to go. 68 m151a1 four cylinder four speed four wheel drive. Has not been registered in about 15 years. I started it last year and the motor sounded pretty good. I took the carb off to rebuild it and now I am tired of it. Definitely needs some love but its pretty much complete. Not desperate to sell so dont low ball me. I dont have any paperwork on it. If intrested call me, text email whatever. 2500obo 916-792-1962”

http://sacramento.craigslist.org/cto/1957960342.html