The 400 is a good torque motor and can turn up some if done right but would probly be too expensive to make fast as a 302 or 351. Ive got one in my Bronco and it runs really good for a 4x4 with all the goodies in it so far. They just werent made for high rpms and are a little heavy for racing. I would rethink putting it in a stang, better off shelving it for something else and use something that can be stuffed in with relative ease like a 460
