May be the twin-turbo version of your 13B engine built to electrical power the 3rd-generation RX-seven launched in late 1991. Each individual rotor on 13B-REW has an individual combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Ideal fit for the Mazda swap or substitute job. https://mazda13bmotorforsale46790.popup-blog.com/37712103/how-rotary-engine-for-sale-can-save-you-time-stress-and-money