These Turbo Manifolds have been designed and Engineered here in Australia.
They are not MANUFACTURED in China. We have had them flow tested in comparison to the original cast manifold, and we have achieved and extra 22% flow, which means they are good for 300rwkw on the SR20.
Even with using the GT2871R and GT3071R, because these have T04 style comp covers, some manifolds require spacers to clear.