Your friend lied to you and no Viper out the can run with a ZR1, I do not know where you are getting your numbers. The reason no one owns a Viper is because they are ugly now and very unreliable. Besides the ones that are worked over for racing they suck. You can't go out and run a stock Viper hard, you might get away with it a few times but then the old Viper flaw shows its face. Blown coolant hose or radiator. There is a 99% chance of this happening in a Viper, Wow I just spent 80 grand on a car that I can't even drive hard. I know 2 people that had them and they liked them at first then hated them. My buddies uncle has a new ferrari that is being recalled because they catch on fire when you try to drive them hard. Hmmm Recalls on the Vette because they will overheat or catch on fire ZERO. And you are right a lot of people have vettes, but not ZO6 or ZR1 versions. Also when you see a Vette people think a certain way and when you see a Jap car you think another way.