Hi folks,
I too had a problem with my 2012 TC clearing the garage door frame; a mere 1". Fortunately, my wife has a 2011 Ford Fiesta. I noticed that the Fiesta antenna looked identical to the TC antenna but is 3" shorter; Fiesta = approx. 10", TC = approx. 13". I made the easy swap and now my TC has ample room to access the garage, Oh Happy Days!!! Best of all, it's OEM and has the same fit and finish, no modifications necessary. For all intents and purposes, I do not notice any degradation in performance. There may be other Ford models that have a similar antenna but this one I can vouche for.
Happy Motoring,
Daoyin