Is the biggest PITA that I have come across. Nevermind about the tooling marks on the bearing surface. That is nothing in comparison. Worry about clearancing the case itself so that the ring gear doesn't hit it, on the gear side. Worry about having to move the entire carrier so far to the left, that you have to put the spanner on that side in a lathe to turn it down, to get it to fit. Then you have to notch the housing to get the lock pin back in on that side. I had to drill a new hole in the spanner to get the punch in it for final tightening. I used all the shims I had, to make the pinion depth correct. Then after all of that, and the 8 foot cheater bar for the crush sleeve, I put the cover back on and go to install the driveshaft and guess what? The pinion won't turn. Why, you ask, because the bolts heads that hold the ring gear onto the locker are now digging into my diff cover. After removing the cover and removing some material, it all works. I just to get another 5 gallons of 90wt to put in the diff. BTW...... A big thanks to Kert for making the razorback so thick.