There honestly isn't too big of a difference between 3.31's and the stock 3.55's. I noticed a difference, but I should have gone with a longer gear.
If you have a built/stroked motor, heads/cams, and are going twin screw, I would go with 3.31's or 3.27's if you're looking for a highway car. You will have more than enough power to move the car. If you're looking for a track beast, 3.55's would be good. There's guys in the 9's on stock 3.55's.
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2004 Cobra
Some mods
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Hybrid Mode
