rad_951

I have been watching videos of high horsepower 951s at the track and it makes me want more horsepower. Unfortunately my engine has 157k miles on the clock. The compression is 150 psi in all cylinders with a cold engine. The car has four track days on it with no problems. Should I risk upgrading at this time or wait for a rebuild/re-ring? What is the worst that could happen? I was thinking of using a Vitesse kit.
Thanks.
Tony