Did you say the ZO6 heating issue was solved with a bigger supercharger???? I do not track my manual Z07 but the heating issue is real in hot weather on the street.If you plan on tracking a car, the C7 Z06 is not the one for you. I personally know more than one owner who cannot get more than four or five laps without going into limp mode, despite several modifications made to attempt to fix the overheating problem. The only successful fix I'm aware of is provided by either Hennessey or Callaway (forget which), where they replace the supercharger with the larger C6 ZR1 supercharger. I seem to recall that fix costs in the neighborhood of $15k-20k. If other forum members have found another solution, I'd like to hear it.