may be the twin-turbo Model of the 13B engine created to ability the 3rd-technology RX-seven released in late 1991. Each and every rotor on 13B-REW has only one combustion chamber quantity of 654cc. With two rotors, the total displacement was 1308cc. Ideal in shape for your Mazda swap or substitution project.About VehicleHistory.com Automobile Heri