I'm curious, regarding the GT500, do you run into heat soak issues on track?
...The 500 is just not a "friendly" track car. It is a bull in a china shop. The car has big torque that can break the tires loose when coming out of a corner. It is like walking a tight rope. You want to accelerate but too much and you are going for a ride. You have to be VERY AWARE.
Tom