Nissan RB V-Band Reverse Rotation Exhaust ManifoldProduct Features Industry leading SUS347 stainless steel investment cast exhaust manifold Cast stainless construction allows ARTEC manifolds to deliver superior flow and efficiency. Smoother merging angles can be achieved versus traditional manifolds, and tight radius bends and runners can also be eliminated which can cause restriction. Rated for 400 800 wheel horsepower Engine Compatibility All Nissan RB20 All Nissan RB25 All Nissan RB26 NOTE: RB30