Is definitely the twin-turbo Edition with the 13B engine intended to energy the 3rd-generation RX-seven released in late 1991. Just about every rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the entire displacement was 1308cc. Perfect match for any Mazda swap or replacement job. https://mazda-rx7-turbo-2-engine56780.blogdemls.com/38732423/details-fiction-and-mazda-13b-rew-motor-for-sale