I think what you're looking for is just plain more power from your Mustang. As other side, the 3.73 gearing will only help you up top before the engine doesn't have enough power to fight wind resistance. So, improving engine power will help over come the resistance of outside elements and accelerate your Mustang quicker and higher speeds.
I do agree with what MustangInTexas said too. What gear are you accelerating in at 80mph?
Will Levantovsky | AmericanMuscle.com
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