May be the twin-turbo Model with the 13B engine designed to energy the third-technology RX-seven introduced in late 1991. Just about every rotor on 13B-REW has only one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Best healthy for your Mazda swap or alternative task. https://devinhquwt.collectblogs.com/75217529/the-definitive-guide-to-mazda-13b-rew-motor-for-sale