Thanks for all the good info, guys. At least now I know what I should be on the lookout for. Both of my fenders are removed, so fender clearance/wiring isn't a problem. Swingarm clearance is another hurdle, though...
If the rear sprocket thing is going to be an issue I'll probably just stick with my stock 16s and paint them some rad color.
SWOOP - If you wouldn't mind letting me know what you find out the rear wheel, I'd appreciate it. Thanks!