May be the twin-turbo version with the 13B engine created to power the 3rd-generation RX-seven launched in late 1991. Just about every rotor on 13B-REW has an individual combustion chamber quantity of 654cc. With two rotors, the full displacement was 1308cc. Great in shape for any Mazda swap or replacement https://rx7-13b-motor-for-sale24567.blogunok.com/39119709/rx7-turbo-2-motor-for-sale-an-overview