Is the twin-turbo Variation in the 13B engine meant to electrical power the third-technology RX-7 introduced in late 1991. Every single rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the full displacement was 1308cc. Great in good shape for any Mazda swap or replacement https://charlieeeeeg.blogkoo.com/jdm-mazda-rx-7-fd-13b-rew-engine-for-sale-fundamentals-explained-53242423