I have a 2014 V6 Premium with Pony package and auto trans. Considering trading it for a 2014 GT Premium, Manual, with Comfort, glass roof with Californiaspecial package and 3.73 ratio limited slip. Mine has under 1000 miles on it sticker was 29540 the other is brand new. MSRP 41170. Dealer wants mine and 14,000 which includes everything , tax, title, doc, etc. I really miss having a sunroof and the glass roof I love. thought?