1986 was the last year for the CJ, replaced in 1987 with the Wrangler, a.k.a, the YJ. To rule out the CJ/YJ error, see if the headlights are round (CJ) or square (YJ), then catalog accordingly. Alternately, if the customer has an ‘86 CJ, the 6th and 7th digits of the VIN should read “87.” If it’s an ‘87 Wrangler (even if the build date is during 1986), the 6th & 7th will be “81.” Jeep owners are known for making mods, so be sure to ask about any known changes from stock.
Thomas Dayton
Assistant Manager
J S Auto Supply in Jamestown, N.Y.

Maybe the year is not ‘86, or maybe it is not a CJ? Check the VIN or once you are able to match up some parts, check to see what year and model those parts fit, and maybe you will have solved your problem.  Maybe the car has a different motor or rear or something changed from original equipment? These are always the fun jobs, but going the extra mile will keep this customer coming back to you!
Harris Steinberg
POJA Warehouse LP
Morris Auto Parts Inc.