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    2012 GT500 safe max power with stock exhaust manifolds

    Hey everyone, I am debating on whether to leave the stock manifolds alone or go through the trouble of doing headers. Current setup consists of VMP Gen2R w/2.6 pulley (15psi), PMAS 120, 65mm TB, stock injectors (47lbs), 3.73 gears, stock mufflers. I would like a little more sound out of...

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