[cmaurer1]

Those people have no idea what they are talking about then. Like I said earlier, if you can't get past 85mph with 4.10's in a Mustang, regardless of engine size, then something is wrong with the car.

[GT_921]

and the gear dont have any bearing on the top speed, they just help you get there quicker. the factory governs the speed using the car's pcm. you need a tuner to remove the limiter and then you'll get the higher top speed. you need the tuner for the gears anyway.