Prepare to have your teeth rattled out. I had that only because of necessity. Making 457 whp / ~320 wtq required that I get it because I was destroying the XTSS quickly.
The R6 is very very harsh as it is an unsprung 6-puck disc. I daily drove my car, but if you don't HAVE to get that clutch, you really shouldn't. It's a fairly hard clutch to drive on a daily driver. :happysad: