Is the twin-turbo Model of the 13B engine built to energy the 3rd-era RX-7 launched in late 1991. Each individual rotor on 13B-REW has only one combustion chamber volume of 654cc. With two rotors, the full displacement was 1308cc. Perfect in shape to get a Mazda swap or substitution venture. https://shanepwyrl.ttblogs.com/13478149/details-fiction-and-jdm-mazda-rx-7-fd-13b-rew-engine-for-sale