Correction, mustang6g.com has everything you need to know about the 2015 Mustang.
Seriously though Jalopnik is a great site for gearheads, but this site has all the info you need for the 2015 stang.
Chaz the spoiler is a meh for me, but I do love your QWERTY braille keyboard interpretation of the reverse light. All jokes aside would it be possible for you to model the spoiler as more of a Roush/ducktail hybrid? I think that would flow better with the lines.
I'd have to diagree. Look at the side window molding. There is no break in it for a vert top. Plus the circular vents on the rear window plastic are present like the other coupes. The verst seem to have them in the spoiler area.