Since these were not intended by the factory to be rebuilt, they didn't allow any room for bearing pullers. I've had some luck using a clamshell but even that doesn't work sometimes and I end up cutting the cage off and then going after the inner race with an angle grinder. The bearings are standard size Timkens which are available from any bearing supply house and are usually cheaper than going to an auto parts store but getting them on line is good too or call Cass (Dr. Diff). Just write down the numbers of the bearing and race. I should have them around here someplace if you can't read them. I retired a few years ago and have been trying to concentrate on working on my own junk for a change so it's been awhile since doing one so I'm kinda out of the loop on prices and availability these days. And yes, it's ok to reuse the bearing cap bolts. Just inspect them and don't over torque them like any other bolt. IIRC, it's 80 lbs for them.