A guy I know has a 4bt in a CJ, here is an article that was done about it.. actually, on second thought, it is a bit of a Franken-Jeep. It looks like a CJ, but it isn't just a straight stock CJ.
http://www.jpmagazine.com/featuredvehicles/154_0805_1978_jeep_cj7_yj_tj/index.html