Exhaust manifold (header) made by Odula of Japan for the NDERC (2.0L) Miata. Odula’s 4-2-1 header houses 2 high flow catalytic converters as well in order to stay street legal. This header will enhance your roadsters sound as well as a good bump in power. Couple this with a muffler for a very racy exhaust note. The ND1 model is the one with 160bhp engine and the ND2 model is the revised 180bhp engine. Odula 2.0L Racing Header should be ordered at REV9 Autosport https://us.rev9autosport.com/odula-2-0l-racing-header.html as they provide the best service and speed we've seen so far!