I'm a little late on this thread, but reading Swazo's post on the new TTGT thread reminded me

I love both Z06 and the GT. Never driven a GT but loads of z06's new and old. Anyways the Z06 in the Nurburgring fast lap was NOT supercharged, which wrongly reported in the mag and since been cleared up on the net. Which makes it even more impressive. Though the driving was done by a professional racer.
Secondly you have to take top gear with a grain of salt. I wouldn't count on it for accurate data, but definitly good entertainment. Though I don't doubt the GT would be amongst the leaders. Not to mention they have yet to test a C6 Z06 on there show as far as I know. I don't beleive they will be either, after there horrible review of the base c6 last time. Not unless they let a good driver on there track, but that would take away the point of the show and the testing all together. Though I do know a Z06 will hang with a gt on a certain closed road course

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As stated the C6 and the C6 Z06 both share the same suspension. There identical, just the z06 is more agressivly tuned.
The GT is just a little to portly. Needs to lose about 150-200lbs IMO. Base z06 weighs in at 3135. Hopefully Ford will come up with a replacement, i.e. there v10 show car from last year. As it looks now, probaly not.