Could be the twin-turbo version of your 13B engine created to electric power the 3rd-era RX-7 launched in late 1991. Every single rotor on 13B-REW has one combustion chamber volume of 654cc. With two rotors, the whole displacement was 1308cc. Best in shape for your Mazda swap or alternative task. https://wayloneapvh.blog2news.com/30347364/5-essential-elements-for-13b-turbo-2-engine-for-sale