The Solstice was a car that GM Performance built out of their parts catalogue, they may have started with a Z0K but it was not one when they were done. Bigger turbo, carbon roof, lexan window, no sound deadening, ect... Our class runs under a version of show room stock that allows mods in only certain areas, but the car needs to be a car that anyone can buy off the showroom floor of a dealership. Its just unfortunate that SCCA does not have the right people in the right spots policing this stuff. A friend that we were racing against showed up with a Lotus and when he saw that it was not the "car to have" he made a deal on the spot and bought one of the Solstice's from GM Performance... He filled us in on all the reasons why the car should not be racing in T2. We race the 350Z because Nissan gave us the car and gives us support (mainly parts) to run it. They want to win and they choose us to help them do that.