Is the dual-turbo version from the 13B engine made to ability the third-era RX-7 released in late 1991. Every single rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Ideal fit for any Mazda swap or substitution project. Wonderful team https://www.nwjdmmotors.com