Buy Stillen G3 then forget your worries. Your not cutting into the frame just a piece of hard plastic, and if you went back to stock it would be covered up were you would never notice.
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2010 Solid Red Z: Mods: Stillen G3 Intakes | BC Coilovers | H&R 20/25 Spacers | Stillen Splitter | Stillen LW Pullie TBI | Red GTR Start | LED Interior | Kenwood Double Din 
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