I think the Vettes took every class, sorry to say. I didn't do well. I couldn't get my Viper out of 12s. I really screwed myself up racing the Viper and the Z06. Two very different cars.
The photographer took pics of all cars participating on that day. Make sure you're looking at the correct date (11/13) which is right on top. I know it just says test & tune but that was the Vette/Viper shootout day.