IIRC it's like a hundred off. The benefit of Z1 is no cutting involved. I see stillens all the time pop up here. You can either wait till black friday or keep an eye out for someone selling them here. I got a pretty good deal on a set of used ones.
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318hp/255tq made by FI Res Test Pipes, FI Non-Res Catback, Z1 Intakes, and EcuTek Tuned by RS-Enthalpy
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