Originally Posted by
HillRider
Older Shimano freehub bodies were pretty much interchangeable with one problem. The bodies would fit on almost any hub but the cones, spacers and dust covers/ seals were often model specific. So if you get a different model replacement body, the current seals, etc, may not line up properly so you may have to improvise.
It is often cheaper to upgrade a built wheel by purchasing a new hub and swapping the freehub body as well as the matching axle hardware... the hub body by itself is over-priced.