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GM performance headers and exhaust: what kind of performance increase?
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05-14-2009, 08:59 PM
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davidj
Drives: .
Join Date: Mar 2009
Location: Ventura, Ca
Posts: 327
Quote:
Originally Posted by
Shocker
297/316 stock
309/329 shorties
337/351 LT's
WoW, That is a big difference.
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