whats the best shift kit for my mustang?
hello, i have a 2006 mustang gt i bought it new from the dealer when i was in high school and im thinking about upgrading the performance to be able to keep up with some of the new mustangs and i have no idea where to start! other then the 4:10 gear the car is stock and im thinking about a shift kit but have no idea what good brands are out there and what exactly what the do. i am also thinking about a chip and im in the same boat when it comes to thoes so any and all help will great! thanks