'11 Edge Sport and '11 Mustang V6 both have the same motor, HP, Torque, and are true dual exhaust.
Now, no one makes an exhaust for the Edge. So we can get the same sound from the Stangs mufflers. But you do have to get them modified to fit. If you want you can put almost any muffler on, but who knows what it will sound like.
I like the sound of stock Mustang too. I dont want anything loud, just deeper and throaty as you can get from a V6.