I pulled up to a light today and a Older model mustang GT (the one before the new one, it was a 4.6L) was next to me. I gave it the rev and he did to. When the light turned green I tore off leaving him by like 2 car lengths. He said he burned out and wanted to go from a roll. We went from a roll and I was in 1st gear at 5,500 RPM which isnt good at all. He punched it and got a car legth on me but I stayed about a car back and he wasnt pulling all the way through 3rd gear. We then raced one more time from a stop and we had somone count down for us and the results were similar to the first race , I beat him by about 1.5-2 car lengths through 3rd. We stoped and talked and he said he was running 8psi of boost, his supercahrger wine was very quite, he was running a centrifugal (vortec I think he said), plus exhaust, and other misc. mods I am assuming that go along with a supercharger kit.