There has been some discussion of the relative quickness of original GT40s as compared to modern sports and racing cars. This Top Gear video has an interesting head-to-head with a Noble M400.
http://video.google.com/videoplay?docid=-4661851097984943684&q=top%20gear
Scott
http://video.google.com/videoplay?docid=-4661851097984943684&q=top%20gear
Scott