Here's a link to Motor Trend's web site where they took an '06 Z06 all out.
web page
Click on the video title next to the Z06 gauge package (5th one down). The 4 other video's on this page are very interesting too. They took a few super-tuned cars (Hennessey Viper, GT40, Lingenfelter Corvette, etc.) and had some fun.