We just added a new product to the web site for this application. It's vinyl that is designed to fit on the top edge of the Ford "5.0" emblems. The sides of the emblem are still visible and you don't have to remove the emblems to install the vinyl. They are $14.95 for a set of 3 or $19.95 for the Textured Carbon Fiber in the picture below.
http://www.bigwormgraphix.net/Mustan...serts-2013.htm