Take a drive to Philly area. Jim Dunn of buickturboperformance.com. Well worth the trip and tolls. He is honest, reasonably priced (which is hard to find once mechanics see word Turbo!) and does an outstanding work.
Raul Diaz knows these cars well. He is at Grand Performance in Long Island City, Queens. I see your name is Fox body. He is really good with Mustangs too. John Csordas in Bedford, Westchester at Bedford Auto Center is another TurboRegal specialist.
The Best Mechanic out here right know is Raul his in Long Island City his shop
Grand Performance 36-25 23st Queens, NY 11106 (718)204-0680 try to Google Map.
Try going to Empire Muscle Car website. you will find out more about all Car Clubs
from the area of New York.