What he said ^ ... I went with Yukon gears front and rear. Well to be more exact I ordered a gear package and recieved yukon 4.88s for the 8.25 and for the dana 30 i recieved USA gear which is a branch of yukon. My gears are DEAD silent and the guys said the rear setup very easy. They said the side adjusters made setting up the axle easier then dana axles using shims everywhere.
The 8.25 uses shims and I believe a crush sleeve for the pinion and theres side adjusters to adjust the carrier specs. When I picked up the jeep the guy that did it said the rear setup perfect the first try, they set the pinion up and used the side adjusters til the pattern was perfect. Also 1 or 2 gear teeth need to be grinded on the ring gear for the cross shaft to get in. Make sure you replace the wheel bearings while its all apart too.
The front took a lot longer to get a good patern. Make sure that the shop you are going to either uses setup bearings or they have other bearings to replace the ones they use during the setup. After pressing the bearings on and off the pinion and carrier they dont sit as tight hence why some shops use setup bearings. You dont want loose bearings after dropping big coin on a regear, don't go to a shady shop for this. The weeks before I got my gears done I called every shop and personally went to them to feel them out to see if they knew what they were talkin about. I had every shop tell me what they were gona do and was convinced by the shop i went to get mine done, they spoke to me forever and always updated me on everything. sorry for the long post but I figured it might help you a bit, your gona LOVE the 4.88s man!!
