Check out the GYT-R cams on the yamaha web site. Webb Cams has some, too. Or you can go with nitrous...
Look up turbos on the web, they make them for everything now. :mrgreen:
Turbo on the R6 will pretty much turn it into a dragrace bike. The daily driver part of it will get a whole lot smaller, unless you don't run much boost through it, and if you spend the $4,000 on the kit (not installed), what's the point of not running much boost? There are a lot of problems that turbos create in the really high revs, on the new sportbikes, like engine blowing.
When you put the turbo on, you have to put a thicker head gasket on the engine to drop the compression ratio (somewhat defeating the purpose a little, but not much). If you don't you'll blow the gasket, and have to put it on anyway.
You can get some pretty awesome power out of a good set of cams, and some other engine work. The $4,000+ you would spend on the turbo could easily be dropped in the engine, and make it more dependable, too. Instead of dropping the turbo in, and get mad because every time you spool it up, you pop, or blow something.
Throw some cams in it, nitrous, do a little head work, and you'll ave more to brag about, too. How many times have you actually seen a bottle on a bike? I have only seen one.