Is the dual-turbo version on the 13B engine meant to power the 3rd-technology RX-7 launched in late 1991. Just about every rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the overall displacement was 1308cc. Ideal healthy for any Mazda swap or replacement venture. Store https://www.nwjdmmotors.com