This stainless steel turbo manifold is designed for the SR20DET as found in the N14 Nissan Pulsar GTiR, Avenir and other FWD / 4wd SR20det applications that use an east-west mounted engine. It has a T25/T28 turbo flange for T25 and T28 turbos (along with other units using the same inlet flange). Note these are different from the RWD SR20 manifolds that we also sell. Made from thick wall S304 stainless steel. These are VERY solid with thick mild steel flanges and a wastegate port (ready for you to attached your chosen wastegate flange to). Port OD is 42mm.