I decided to just put some screens in the headrest myself, so I went with the kenwood 7" widescreens. They do actually fit with little room to spare on the sides and they match my kenwood headunit. Also the screen quality is the best I have seen. The vizualogics screens are really nice too. But they dont make them for the GS, at least they didnt a few months ago when I was checking

 

Where did you find them for 500.00