Don, I wasn't aware that could be done. Have you swapped swingarm to newer style? I would like a fatter tire on the back, but it's only for aesthetics. I would think that it would be a costly mod as well so I haven't really researched it yet.
Yes, and it's a really worthwhile upgrade. The old square hollow swingarms had a tendency to bend, crack or even break. I thought I was changing mine on the SERG prophylactically a few years ago. But when I got it out found it both bent and cracked.
There are two ways to make the change. One is with the bushing kits that mate to the 02 and newer swingarms on their OD and keep the smaller cross shaft size from the 01s and prior on their ID. The other option is to change cross shafts also but that means boring out the tranny case to accept the larger diameter shaft from the 02-08 bikes. The larger shaft just isn't worth the trouble.
Rivera and Sta-Bo both make (or made) kits for this. Sta-Bo's is their Sta-Bo III. I just looked and can't find the Rivera kit in the Drag book nor anyplace else either. Perhaps no longer available?
The Sta-Bo kit makes for an easy retrofit though. Allows using the 02-08 swingarm on the 01 and prior touring bikes. Brake caliper mount stays the same. You'll be using the larger 1" axle (and losing the old stupid axle adjusters) so you'll need to change bearings in the wheels too. Some of the old wheels don't have a large enough center hole to accept the spacer between the bearings for the 1" axle. That's not a deal breaker though. All of the aluminum wheels can be bored through to accept the spacer.