Congrats! I traded my 09 370Z for a 2010 GT500...which is a fun monster.
As far as the GT, they are far more capable than people realize:
Super Coupes Track Attack! - 2011 Ford Mustang GT vs 2011 BMW M3 Coupe - YouTube
M3 beat it by .09 of a second...GT is better on the brakes and of course 0-60/1/4 mile. And is 25K less than the M3. Of course, I still give the thumbs up if I come across a 370!
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Chris
Current: 2014 WRX Stage I + SPT / 2013 Hayabusa 202HP
Former:09 370Z 7-AT PW/Ark Type 2 exhaust/Evo R lip/TSW Nurburgring carbon