I would like to point out that aftermarket alarms systems can easily set off PATS. In this case however he had an aftermarket alarm system, navigation system, and a hands free system installed on the vehicle BY A FORD DEALER. Because it was installed by them improperly and couldn't fixed by them, they were liable and ultimately had to be bought back because of them.
An upgraded alarm system is not a factory Ford option on the Ford GT. Neither is a hands free kit or a sat nav.
-Mark