Need Help w/8.75 Gear Swap

just to add; only use the Timkin bearings (brand). And I would buy 2 sets for the pinion. One to use as the set up bearings (honed out as previously mentioned) and the other for the actual assembly. WHY: because the tolerance of the timkins are such that they are virtually identical from a measurement perspective. Other bearings do not hold as tight a manufacturing tolerance spec. This will assure thsat the setup will be virtually the same as the assembled setup. you don't really want to have to take the thing apart again so the investment would be a good one. I think the factory also used the timkin bearings but check to make sure. (Plus you could reuse the setup bearings to "setup" other rear chunks. then you could change gear ratiois easy (with the spare setups)