These Saleen S281 "Extreme" Mustangs were Saleen's last real hurrah. They are the most powerful and rare variant of Saleen's line of modified Mustangs. They claimed 600 horsepower from a supercharged 4.6L V8, although according to the owner of this clean example, it made nowhere near that when they got it. This one now makes 500 wheel horsepower with a soundtrack to match. Check out the Saleen on Wheelwell! http://www.wheelwell.com/profile/550e6fa798d3a3394ef1a350/vehicles/550e6fda98d3a3394ef1a351#