For those of you with bullitts how many tenths (if any) might I pick up with changing the gears? I hate the stock gears in this car, what was ford thinking? My father just bought an 03 mach 1 with 3.73s, and my goal is to smoke him....someday. If any of you are in the 12s, N/A post and let me know what you are running. For more info see my post in 4.6l performance forum.