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Old 10-09-2008, 03:09 AM   #13
fbird777
SOM WS6
 
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Drives: 2002 SOM Trans Am WS6
Join Date: Aug 2008
Location: Kinston, NC
Posts: 267
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.
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