May be the twin-turbo version of the 13B engine designed to ability the 3rd-technology RX-seven launched in late 1991. Each rotor on 13B-REW has only one combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Fantastic healthy for the Mazda swap or substitute venture. About VehicleHistory.com https://cashmkhcu.blogdanica.com/29705285/a-simple-key-for-jdm-mazda-engine-unveiled