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    South Side Performance introduces 820 hp turbo upgrade for Nissan GT-R

    Click above for a gallery of the South Side Performance Nissan GT-R turbo upgrade
    Most of this week's Nissan GT-R tuning news has been coming out of the Tokyo Auto Salon, but South Side Performance is making its own headlines. The tuning firm based in Sioux Falls, South Dakota, is offering a set ...


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