It does have to go with with the CS valence which I think is a lot nicer than the stock GT valance anyway.
Hey Leon, just curiuos on what you meant by this!
Did you find that it is an add-on to a GT/CS Valance??
2011 Mustang GT
3.55's, Security, Comfort, 401A, MT-82
Mods:GT500 Axlebacks, Side Window Louvres, and Tinted Windows, Ford Racing M-FR3-MGTAA Adjustable Suspension, BMR Adj. Panhard Bar, BMR Control Arm Relocation, CDC Chin Spoiler