This car is definitely underrated. Ford says that the 2011 Mustang GT makes 412 horsepower and 390 pound-feet of torque, thanks to its new, advanced 5.0-liter V8. Well, it belted out 395 horsepower at 6,600 RPM and 365 pound-feet of torque at 4,350 rpm. That's at the wheel, natch, and since IL...