Thank you for documenting everything and just doing this hybrid engine. I’m Trying to do a NA build but thinking about closing the plate exhaust ports. So I can just use the peripheral exhaust manifold. My goal is smog legal California with just better exhaust flow and reliability by eliminating renesis exhaust ports. Renesis rotor housings chrome finish seems pretty weak with wear. New GSl SE housings are cheaper too. New smogs only looks at system readiness status so as long as no check engine light it will pass smog and just make the exhaust manifold appear stock to pass the visual inspection which I know they don’t really check anymore anyway.