I just saw that you're in Los Angeles so I guess, unfortunately, they would be the best for you to use, unless you go down to S.D. much. AJ USA is down there. They are a great company and are listed as a dealer even though they don't have any 3dCarbon products on their site.
It's called the 3dCarbon Mach 3 spoiler. $300 from Cal-Mustang.

 

Well, we all know what's gonna happen when a new member jumps in and tells us he installed the APC kit on his Mustang. So, with that in mind, remind yourselves to go to your nearest hardware store and purchase a pitchfork.

 

Apc kit with the underlights too, only the best.