Correct. Somewhere around 92/93 (I dont remember) the pilot bearing size changed from .59" to .75". Your transmission will have .75" tip. Measure the pilot bearing size in the YJ. If it is of the smaller variety, you will need to utilize part number PB77. Its a pilot bushing from a CJ with the 304. It will have the correct OD for the 4.0 and ID for the large transmission tip.