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Video - K&N Horsepower Challenge Sweepstakes finalists are on display for the Pontiac G6 GXP Eight NHRA Pro Stock drivers competed in the 2008 K&N Horsepower Challenge at the 2008 NHRA Summit Racing Equipment Nationals. K&N Horsepower Challenge Sweepstakes finalists are on display as their chance for the Pontiac G6 GXP is determined by the success of their Pro Stock driver.

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