not at all. I order OEM windshields for a kit car builder all the time that uses the GT windshields. Guardian industries will build windshields for the GT for as long as we need them. they are the Ford supplier which also installs the radio antenna lead as factory spec.
What is FUBA antenna module? My 05 GT has always had terrible AM radio reception. Is this a fix?I now have the ability to attach stuff. Maybe this is too late, but here are the Ford notes on installing the newer style window with the upper center antenna connector on the early 05 cars.