May be the twin-turbo version with the 13B engine intended to energy the 3rd-generation RX-seven launched in late 1991. Each rotor on 13B-REW has a single combustion chamber quantity of 654cc. With two rotors, the entire displacement was 1308cc. Fantastic in shape to get a Mazda swap or substitution undertaking. https://rotaryengineforsale92505.blog5star.com/39330363/the-2-minute-rule-for-13b-turbo-2-engine-for-sale