Is the dual-turbo version of the 13B engine created to electric power the 3rd-era RX-seven launched in late 1991. Just about every rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the full displacement was 1308cc. Perfect match for the Mazda swap or substitution job. https://jdm-mazda-rx-7-fd-13b-rew12118.total-blog.com/5-easy-facts-about-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale-described-59170481