I was going down the road and seen a red silverado ss yesterday. It had stock exhaust and rims. I get beside him at about 50mph, he punches it and then I punch it. He pulled me by about half a truck right off the bat, (I think because he had about a 1-1 1/2 sec jump). Then he quit pulling on me and I started pulling a little on him. I gained space from about 3-4 feet behind his bumper to his back door and then we came up on traffic and had to hit the brakes. I think we hit the brakes at ~75mph.I was very suprised in how fast he was for probably being stock . He might of had an intake and some kind of tuning, but I think he was probably stock. I guess that's why they have the SS badging! It would certainly kill a single-cab hemi stock vs. stock. Now, I'm motivated to get the LS1 in there and have a rematch!