May be the twin-turbo Variation from the 13B engine intended to electrical power the 3rd-technology RX-seven released in late 1991. Every single rotor on 13B-REW has one combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Ideal in good shape for any Mazda swap or replacement https://13bengineforsale15678.prublogger.com/30280271/new-step-by-step-map-for-13b-rotary-engine-for-sale