Are you sure about that. I believe 370Z's are like 350Z HR's (we share test pipes) and the header to test pipe gaskets are needed to install.. that's why Berk includes them. The OEM gaskets in that location are crushing ring gaskets that slip around a protruding pipe that comes out of the OEM cats, but the test pipes do not have this protruding pipe so it's very difficult to re-use the stock gasket. Berk sells the gaskets you need for $25 shipped.
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2007 350Z HR :: 3.7 Final Drive : Injen Long-Tube Intakes : TurboXS Cat-Back : Eibach Sportline : Enkei RPF1 18x9.5/10.5 +15
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