The original car in the post is awesome. I have helped do a few minor things to it but it is just a beautiful car in person. It is a stock 2v motor with a saleen blower, 03 cobra irs and many many other parts. It started out as basically a hunk of junk and was built from the ground up. I remember riding in that car for the first test drive with no hood, no front bumper, and no fenders with only a drivers seat in it and 4 people, lol. good times. It was featured in an article in Modified Mustangs and Fords magazine (July 2008). First show it got out to was the 2007 World Ford Challenge. ...beautiful piece of work.
The yellow fastback was in a magazine a while back and I believe they actually put the body over an 03/04 chassis (blending what was left of each unibody together).