Is definitely the twin-turbo Model on the 13B engine made to power the 3rd-generation RX-7 launched in late 1991. Each individual rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Fantastic in shape to get a Mazda swap or substitution https://rotary-engine-rx789998.blogofchange.com/39581255/the-greatest-guide-to-mazda-13b-rew-motor-for-sale