Finally got to run my friends stock 03 z06 tonight. Car has driver mod and he runs 12.1s in it on regular tires. We ran a few times with back and forth results. First dig I beat him by a car. Second dig he hooked a little better and we were locked down. I didn't heat my tires up like I wanted and was spinning more than I wanted each launch. First roll from 30 he pulled a nose, I pulled it back, then granny shifted 4th and he gained it back. Second roll from 45 we were dead even nosing each other out then I hit fifth and just started strolling and took it to the moon. By 160 I was already 2-3 cars out and kept pulling. All and all we ruled the cars to be very even. I'm satisfied with the results because I knew how fast that car was and that he can drive very well. With gears I know my car will do easy 11s.