Can you do me a favor and post a picture of the deck lid under the rear panel? Im curious if its designed like the 2011.
The 2013/14 decklid has the same dimensions as the 2010/11/12, and the same hump under the faux gas cap, but it adds two rows of holes for the factory decklid panel. The 2013/14 panel can be mounted to a 2010/11/12 if you remove the tabs that align with the holes in the decklid.
Here's a picture I saved from either this forum or some other:
And here's one of the 2013/14 panel on a 2010/11/12 car:
2012 GT Premium Coupe | Performance White | 401A Charcoal+Grabber Blue | Comfort Pkg | MT82 | Boss 302 Shift Knob | 18" Pony Pkg Wheels w/Brembo Pkg Center Caps | Boss/CS Front Valance | Scott Drake 5.0/Tri-bar Fender Emblems | FRPP Strut Tower Brace | Redline Hood Struts | GT500 Rear Splash Guards | Rear Spoiler Delete | Sound Tube Delete