Is the twin-turbo Edition on the 13B engine created to energy the 3rd-generation RX-7 released in late 1991. Each and every rotor on 13B-REW has a single combustion chamber volume of 654cc. With two rotors, the overall displacement was 1308cc. Ideal match to get a Mazda swap or substitution undertaking. https://www.nwjdmmotors.com