I think the 4.10 gears would be a good mod. The M3 GT4 is running them from the factory, btw.
As far as 1/4 mile gains, who knows. Probably a modest gain since it's not a big jump. The toughest part would be maintaining traction in 1st gear since that can already be a challenge with the stock gears.
Last edited by FStop7; 05-13-2009 at 09:48 AM..
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