OK. Here are the antenna details. Today, I happen to be going to my Ford dealer and a windshield shop that does my windshields, so I got the following windshield details. Ford made the antenna connection change from the side of the windshield to the top center of the windshield on cars manufactured on and after 11/2/2004, per the windshield shop. This is consistent with the dates on the Ford notes attached. Only the top center antenna connector windshield is now available for all GT's. GT's made prior to 11/2/2004, with the side antenna connection, require the parts listed on the attached Ford notes. These parts are required to adapt the top center connect windshield to the car's side connection. Attached is a quote from my Ford dealer with additional details showing the parts are plenty available. If you want to use this Ford dealer to order the parts, I included the contact, his name is Jarred Gibson. TASCAparts.com is probably your best deal on ordering these parts and TASCA shows all available. TASCA link below.
Hope this along with the attachment helps.
5G7Z-6303100-AA Windshield With Top Center Antenna Connector, Currently Available, Carlite No: DW01644GTY
4G7Z-6303100-AA Windshield With Side Antenna Connector, Apparently Not Available
5g7z6303100aa - Glass Windscreen
www.tascaparts.com