Upgrades /
RearWheel
1998-2002 Katana Rear Wheel
This rear wheel has been reported to be a reasonably simple swap for the GS500.
More information can be found here:
http://gstwins.com/gsboard/index.php?topic=25426.0
And here:
http://gstwins.com/gsboard/index.php?topic=67348.0
1988-1989 GSXR 750 Rear Wheel
Here are some instructions and pictures regarding how to do this swap.