Is definitely the twin-turbo Variation with the 13B engine built to electric power the third-generation RX-seven introduced in late 1991. Every rotor on 13B-REW has a single combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Excellent match to get a Mazda swap or substitution task. https://custom-rx716047.bloggosite.com/36324981/the-definitive-guide-to-mazda-13b-rew-motor-for-sale