I'll let you in on a secret; I don't care what happens to it after I sell it.
There is lots that can be done with these to increase hp. but why? a bone stock 550 or 650 of later years like a Ninja or the like will walk away from even a heavily breathed on XS.
I think the beauty of these bikes is their classic looks, sound and economy.
I would keep this bike to ride to work and such, but I needed a bike that was more comfortable for two-up riding than this.
There is a BMW K100/RT now in the garage for that reason, and this one is taking up room in my limited storage, so it needs to go.
Mark