you'd think it would be a simple bearing change. someone on the xl forum asked the same thing. heres the reply to it.
Yes, you can use other wheels. However do some measuring first on the old and new wheels before getting the bearings. The depth of the bore that the bearings sit in changed over the years. This means you will need different thickness bearings depending on the model year of the bike. You need to make sure that the distance between the bearing outer faces (measured through the axle hole) is the same afterwards. This might also mean a new axle sleeve
hope this helps