It currently has the RST elbow and a 0.63 exhaust housing but it will be going in the westfied on the 1.CVH from my ERST so i will have to have an exhaust made for it anyway. If it goes on the Std RST manifold it need to have a spacer on the joint face of 10mm because the compressor housing catches No4 outlet. I havent heard of anyone running the same setup but im thinking it should be able to flow some serious amount of air. I would like to try a smaller exhaust housing tbh to make it spin up a lot quicker!