Few years ago the covers were available relatively cheap, think they may have had more ordered than cars built. I have a different version I had traded for, will post pics later
The Shaker stereo's in at least the early S197 was a known draw issue, some have better luck if they turn the stereo off before turning off the car. Worth a try for free.
Confirming Boss does fit with some hood rubbing, the regular GT 2011-2014 does not (not tall enough for intake). Another I fit checked was the 08-09 GT500 KR brace, does NOT clear the GT hood.