Before I bought my '13, I was calling around, looking for the prices for a sunroof on an '11 or '12. One place said they could do a glass roof. It'd take a week and cost $3500. No, I didn't go that route but it was there.
Performance White '13 v6 MT. 3.55 gears, Bama tune, Eibach sway bars front and back, Airaid CAI, Boss 302 STB, 18x9.5 SVT wheels, 255/45 ExtremeContact WD tires, Redline hood struts, various appearance mods and FUN.