UPP's top mount Honda B series tubular manifold. Standard with the T3 flange, T4 and twin scroll available, call for details. Comes standard with 38/40mm v-band wastegate flange. Tig welded and back purged to ensure that you are receiving the highest quality product possible. Custom hand built in house, made in the USA, high quality T304 sch 40 stainless steel, backed with our lifetime warranty.