Is the twin-turbo Variation in the 13B engine made to power the 3rd-generation RX-7 released in late 1991. Just about every rotor on 13B-REW has one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Ideal in good shape for a Mazda swap or substitution venture. https://jdm-mazda-rx-7-fd-13b-rew53950.dgbloggers.com/34304547/the-2-minute-rule-for-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale