I have done two track days, and plan on doing many more. I plan on doing so many more that I would like to take my 03' zx6r and basically turn it into a full on track bike. However i was just curious as to how many miles these bikes are good for? I already have 15,000 miles on my odometer, and I dont want to invest the time and money transforming my bike from stock to track ready if I am going to be spending the same amount of time and money reparairing a and maintaining a bike on it's last leg.