How hard are wheel bearings to replace and align? do you need a special tool.....?

 

Front wheel bearings are a snap to change. No special tool required.

 

The procedure's in the Haynes 82-92 Camaro manual. You basically remove the rotor, and place it "wheel lugs up" on a bench. You tap out the rear grease seal with a screwdriver, and it falls onto the bench (along with the inner (larger) bearing). Then you use a brass drift/punch to tap around the inside of the inner bearing's race. This works the race out and it'll fall out on the bench. Then you flip the rotor over "lugs down", and do the same for the outer bearing's race. Then, you tap the new races in by tapping them in evenly with a ballpeen hammer. It helps to have a section of waterpipe that fits the diameter of the race; then it acts like a bearing installation tool.

It's not hard, just a lot of tapping, a lot of messy grease, and a lot of pain-in-the-butt "why won't it line up?!?!" cursing as you try to seat the new race "evenly" so it goes into the rotor.