I don't know of any myself but having to travel around a lot my best advice is to talk to the actual tuner and see how much experience they have working on ford v8s. Usually I have found they are honest and refer me to a tuner who knows his stuff. If he can't shoot you straight and tries to sell. you on his tuning abilities, move on.
Brenspeed is an Indiana based Mustang performance shop that is well known for there tuning. They also have a shop in Texas somewhere. Look them up, I live in the same town and they have a really great shop!
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