This may be a repost but here is a linkto the Car & Driver video of the comparison of the 2007 Z06 and the 2008 Viper:
http://www.caranddriver.com/carvideo...tid=1155105457
Edit: actually, go to thi slink then down below click on the "Max Performance" category. You will see a thumbnail of the video with the word "Rematch" on it. That's the video.
/Rich