Could be the twin-turbo Variation of your 13B engine designed to electricity the third-era RX-7 introduced in late 1991. Each rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the overall displacement was 1308cc. Best suit for your Mazda swap or alternative project. their professionals https://13bturbo2engineforsale51582.bloginwi.com/63564553/new-step-by-step-map-for-rx7-13b-motor-for-sale