[red82gt]

With a 2001 GT, go with at least 373 gears. They had 3.27's from the factory and 355's would hardly be worth the effort. If it was my car, I'd go with 410 gears. Thgen a k&N filter (I wouldn't bother with the cold air), and then an offroad h or X pipe. One of my friend with a 99gt had just a k&N and an offroad X and hit 13.7's@103 on street tires. With 373's and slicks it did 13.20's @102mph.