This stainless manifold kit comes complete with manifold, turbo adaptor and wastegate extension adaptor. It is designed to fit the Mazda FC3S RX7 (1986-1992). The manifold features a T4 turbo flange, but the supplied turbo adaptor will allow you to run any T3 (T3T4) flanged turbo as well. Se up to take a 4-bolt external wastegate. 6251b