When I was looking online at a build your own Mustang you could choose different pieces. For example: you could choose a side scoop, spoiler and hood scoop as individual options. But then when you went to order the car, you had to get one of the packages.
I always hated that because it seemed like you could really customize the car from the factory. (just looking at the website)
I wasn't a big fan of the side scoops but along with the CS stripe, it works.
2011 Mustang GT/CS - Race Red, 5.0, 6-speed manual, 3.73, Comfort Package, Electronics Package, HID, Tinted Windows, Boss Splitter