8 3/4 rear end question

or the back side of 30 with... Oh wait... With the 489 housing it is a little simpler changing gears because of the crush sleeve but there is always a chance you get one that was machined a bit off compared to your donor. I have been very lucky over the years in keeping the shims from the gears that came out of the housing and using them on the set going back in. Even with a bearing puller and a press you may end up having to buy a new inner pinion bearing as they are easy to destroy when pulling them. The lash is pretty easy to set if your depth comes out good. Just make sure you keep good preload on the carrier bearings.