You'll have a hard time finding a car than whoop a Z06(especially in its price range). The LS7 is also one of the most efficient big hp power plants made. No gas guzzler tax for a car with its power #'s is phenominal.
The new Z06 comes in at
#9 on the Official Nurburgring lap times. Do let us know when you buy a car that can beat it. There are some out there, Im just curious what you end up with, especially since an evo is on the wish list.
http://www.fastestlaps.com/tracks/nordschleife.html