race cars:
7:01 --- 176.152 km/h -- Manthey Porsche GT3 race car, 493 PS (AutoBild 06/04),
www.manthey-motors.de/nextshopcms/cmspdf.asp?id=217
7:10 --- 173.100 km/h -- BMW M3 GTR, 450 PS/1350 kg, Joerg Mueller (practice 24hrs race 03)
7:12.25 173.500 km/h -- Schnitzer BMW M3 GTR, Dirk Mueller, 24hrs race practice (02)
7:20* -- 168.545 km/h -- Opel Astra DTM V8 Coupe, 500hp, set-up for 24hrs race (sport auto 03) *estimated
7:21 --- 168.163 km/h -- Blitz Supra, 650 PS (Autocar magazine 97)
7:25 --- 168.651 km/h -- Alzen Motorsport Porsche 996, 24hrs race, Uwe Alzen
7:36 --- 162.631 km/h -- AC-Schnitzer M3 CLS II E36, 350 hp, Michelin Sport Cup R , Mattias Ekblom
7:40 --- 161.217 km/h -- Porsche GT3 RS, stock but Pirelli P Zero Corsa, Mattias Ekblom (ams)
The other Blitz Supra did 7:21 on the long track of nurburgring, with less power. This one is a race car though, comparable to the C6 Zo6 with minor mods. Car set-up and driving play a big part, too. Sorry if this whole topic went south. Yes, any car can be modified to be faster in all aspects than the next. Its a food chain for cars.