Here is a video taken by the 350Z while he tries to chase down an 09 Cobalt SS/TC that is stock engine.
The owner of the Cobalt said this, "Lightly modded 350Z, not sure of everything he had, I think exhaust shocks struts and springs.
My car had the OTTP 1.25 sway bar and Gforce R1 tires. Otherwise stock 09 TC."
http://www.youtube.com/watch?v=ZfSgnvErxAs