These are gee-up times. If you go out to Western Sydney International Dragway on wednesday nights, Clubsports cant even do these times. Most stock XR6 turbos, SS commodores, Clubbies, XR8s etc find it tough to break 15 seconds!
The times that magazines give are done on a V box! Different ball game on the strip with proper timing.
p.s. remember, we are talking in the hands of an average punter!