Bumblebee's rival, Barricade, was a Saleen.
Here is an article and quote about the Bullitt. For example....
"Under the hood, the Bullitt features the first use of an open-element air filter in a factory-produced, fuel-injected Mustang"
http://www.themustangnews.com/carnew...bullitt120.htm
Or anyone can read the official news releases if you are interested in more.