it was christmas eve and i was going to do some last minute shopping, and i see this blue s197 trying to catch up to me. we are getting up to a light and it was just turning red and i pulled in the right lane thinking the car in front of me was going to take the yellow and the mustand stayed in the left. anyhow, the car didnt take the yellow so i quickly got behind the stang. he had an exhaust based on sound alone, but i didnt get a chance to talk to the guy so i have no idea what else if anything. im bone stock and had 200lbs. passenger with me. anyway as the light turns green he nails it and takes off, i had to wait a split second for him to get out of the way and i was off as well, he quickly got into the right lane and i proceeded to pass him as i shifted into third. we were both fully in it, and i pulled on him good to the top of 3rd (starting behind as well) and then we let off due to upcoming traffic. then after my shopping was done i was at a gas station in the same area and i saw him racing another s197, but this one sounded much better so im betting the first guy had a catback only, while the second guy probably had a full system. and i believe the guy i raced was in an auto as well.