Honda K Series 70mm V-Band Exhaust Manifold rb up from the 33mm runners

up from the 33mm runners on the SR20 and Evo designs

While this can increase boost levels

Direct replacement upgrade

5 inch sized pipe and flow

Honda K Series 70mm V-Band Exhaust Manifold rb up from the 33mm runnersProduct 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 Designed for easy fitment along with plenty of space and clearance for oil drains and servicing Engine Compatibility