I have a 2001 GT with 3.73 gears on it- the gas mileage did not change that much- it just depends on whta you are doing with the car- drag racing alot or just occassionally amd mostly street use- thats what mine is for. It did dropped 3/10's off my qtr mile time- so its worth it. If you are going to do alot of drag racing maybe the 4.10's would be better but if not I would stick with 3.73's.
Shanda
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2001 Steeda blown GT (AKA Black Beauty)
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