Thinking of upgrade your 370z performance, I would advise you to upgrade too a GTM Cast Ductile Iron Turbo Exhaust Manifolds. Adding the GTM's Cast Ductile Iron Turbo Exhausts Manifolds to your 370z will improve your horsepower dramatically. GTM Cast Ductile Iron Turbo Exhausts Manifold are upgrade units that allow factory turbocharged vehicles to utilize larger turbos.  The GTM Cast Ductile Iron Turbo Exhausts Manifold cast-iron and stainless steel tubular manifolds utilize precision craftsmanship and offer flawless fitment for each application.  Each GTM Cast Ductile Iron Turbo Exhausts Manifolds is designed to promote maximum exhausts flow for increased turbo spool up and is fabricated with provisions to directly mount a wastegate for unsurpassed turbo boost management.  GTM Cast Ductile Iron Turbo Exhausts Manifolds are also available for select naturally aspirated vehicles to construct custom turbo kits.

GTM Turbo Exhausts Manifolds are pre-packaged stainless steel tubular manifolds and wastegate combinations that come complete with mounting hardware and flanges for select popular turbocharged applications.  The GTM Cast Ductile Iron Turbo Exhausts Manifolds offer added simplicity in assembling and integration of GTM components into a custom turbo kit application. GTM Cast Ductile Iron Turbo Exhausts Manifolds are available for custom turbo kits on select turbocharged & naturally aspirated vehicles. These GTM Cast Ductile Iron Turbo Exhausts Manifolds high quality cast units offer great flow characteristics and durability for mounting turbos & wastegates. So forget those thoughts of having a factory parts on your 370z and take a look at the GTM Cast Ductile Iron Turbo Exhaust Manifolds today.