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Performance Exhaust Option
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10-09-2008, 02:09 AM
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fbird777
SOM WS6
Drives: 2002 SOM Trans Am WS6
Join Date: Aug 2008
Location: Kinston, NC
Posts: 266
Shorty headers FTL, might as well keep the stock manifolds, you will see minimal gains. If putting longtubes on an LS3 is anything like an LS1 you should see 15-20rwhp.
fbird777
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