I own a 04 Cobra with a Magnaflow Cat back & JLT CAI. I was up to my local ford dealer and a black 2001 saleen 281 SC pulls in. We got talking and I found out that he has the same mods as me except he had long tube headers with x-pipe. He said he just bought it and recently produced 425 RWHP on dyno. I talked him into running from a 20 mph roll. We went out to the highway and on three horns we went. I was in first gear. I put my foot to the floor and I hooked up as he did also. I could not believe it. I was about 2 car lengths on him by the time I hit second. By the time I hit third I was about 4 cars on him. I let up about 100 and he passed on by and waved.