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Old 01-29-2011, 12:35 PM   #9
jbs986
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Join Date: Nov 2009
Location: Novi Mi.
Posts: 194
The best and only good mod, for the 2.5 IMO is an under pulley W/ harmonic dampener cheap and easy DIY and a 10hp. Gain for about $ 175.00

If that is not enough buy another Boxster W/ a larger motor.
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