I took out an SRT-4 with an upgraded turbo kit today. Nice looking car too. It was fast but not fast enough. The guy said when you shift you cant even tell you are shifting. I said then how do you know I was shifting. He says, not by the speed of the car just by hearing the engine. I said thanks for the compliment. Anyway, from 40 to shift into 3rd I put a car on him. From 3rd to about 100 mph I put 2 more. Then we called it a day. Nice guy with a nice car and a healthy respect for the BIG BAD Z06. Not done on a street.