I spent my weekend upgrading my rear end with the Whiteline bushing kit and Quaife differential on my 06 sedan and firstly, let me tell you that that rear bushing is a major PITA. The time came to switch out my diffs, got my ring gear bolted up to the new Quaife and got ready to drop it in. I ordered a set of bearings from DealerDirectParts to keep me from having to press out the old ones and I thought preventative maintenance would be good anyways. I didn't think the check these bearings until I was ready to put the new unit in and as soon as I opened the OEM Nissan box, the bearing spilled its guts all over the diff and shop floor. After successfully finding every piece and putting it all back together, I noticed that the bearing wasn't completely round and was nowhere near the quality of the unit that came out. If this was indeed a Nissan part, I'm severely disappointed. 50 bucks a pop for complete crap X2 plus shipping. Unfortunately I had no other course of action other than to install these bearings. Things seem to be working fine and I'm loving my new rear end, but I want everyone else to be aware of these bushings. DealerDirectParts was no help on the issue either. I can understand because I didn't have a documenting picture, but they acted like "Not my problem" when I spoke to them, Damn I'm Mad.