Exhaust manifold designed for: Nissan Skyline R32 GTR RB26DETT Nissan Skyline R33 GTR RB26DETT Nissan Skyline R34 GTR RB26DETT Dimensions: Turbo flange: T4 TurboWorks exhaust manifold is made of 100% stainless steel. from the very beginning, because the exhaust gases extruded from the cylinder go to the exhaust manifold, which is part of the engine body, then they are directed to the first section of the exhaust pipe, then to the muffler, or several silencers arranged in series, and then to the outlet part of the exhaust pipe. The kit includes a set of gaskets. & nbsp