I have a 06 Mustang Gt and have found a shop on 441 called Corky's Muscle Car and Performance. I have had him install my Rouse Power Pullies and more recently my BBK shorty headers. Corky is a really nice guy that does NEAT work and is very efficient. His prices are in line with other performance shops but what I really like is he is honest and Local. If you happen to stop in or call please say Ron with the white GT, blue stripes sent you. Good Luck!
If you happen to be in a Musatang club, please tell them about Corkey. I'm trying to convence him to be a Mustang shop.