They are the largest ford dealership in the world, I also think they got more GT's then any other dealership. Saying that, they probally service more gt's then any place else. Not sure what the quality of service is.
That is where my car goes and it has been good service thus far. Want re-assurance.. then ask for Brandon Boechman.. he is the grandson of the owner and works in sales. Tell him you're a buddy of Tim the stuntguy and would like to set up some maintainence and he should take care of you.