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03-25-2009 | 01:41 PM

#1239

JoeyTheRocket

Tech Master

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Joined: Sep 2008

Posts: 1,901

From: Oswego, IL

I know a lot of the GRP guys at my track love the OS P4 plugs. I know they were saying the trapper is off but the P4 seals up good enough and runs great.

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