Hello, this is my first post, bear with me if it is a little off the normal format. Here is my question, I am looking at putting in the Directed Electronics mod kit for Sirius radio. Has anyone had this plug-n-play mod put in their "F"? Where you able to use the "shark-fin"? I was at Car-Toys today and they said I would not be able to use it. I found this hard to believe. Please respond. Thank You. POODLES