When I saw the Camaro I immediately thought, it would be a great KITT, basically because it had the air intake in the front that would be a good place for the scanner. But not everyone likes the Camaro or they like the Mustang better, and I can see why. The Mustang is cool.
So now there is the 2010 Mustang, which looks really great. And what better way for Ford to promote the car than use it on KR.
And when I saw the Roush tuned 2010 Mustang I had this vision, hope you like it:

IMHO it is the best choice for KITT I've seen so far.