I find the comments by the OP about his 2014 GT500 interesting. I must congratulate him on purchasing a 2015 Mustang. It looks and sounds like a great car. Now, I would never get rid of my 2014 GT500. I just like it too much. I parked it next to a 2014 ZL1 and noticed how much better my GT500 looked than the ZL1. The ZL1 just looked so very plain. My GT500 has the track pack and handles very well. The workmanship is flawless on the body and interior. If I were the OP, I would have installed 4.10 rear gears. I can see how frequently driving in traffic with the stocks gears would leave something to be desired. I think Ford put the tall gears in the 2013-2014 GT500 to save us from paying the gas guzzler tax.