The bad news... If you want more power, unfortunately you are going to need a newer and/or larger bike. You can't really pull more than 115-120 hp out of this bike without doing MAJOR engine work to it.
The good news... You should be able to have a BLAST on that bike if you take it to ANY track because its highly unlikely that you will out ride its performance capabilities.
Do you think its a waste to bore it to a 713 and port the head
Terrible idea... If you want a 750, buy a 750. If you want a literbike, buy one... Otherwise you could just stuff an R1 motor in your frame. It's a clean swap if you get the 2003-2005 R1 motor with your frame.
Things I am sick of explaining on this forum:
What's the difference between an R6 and an R6s? HERE
Come on guys, if your gonna lie to him, atleast clear it up if you see him believing it .
Op, don't try any of that stuff, it won't work. as far as more ponys, well.... Good luck. They are 600s and can only be tricked so far. Add a -1/+2 sprocket change, won't give you more power. But will feel like it did.