Is the twin-turbo Variation on the 13B engine made to ability the third-generation RX-7 introduced in late 1991. Just about every rotor on 13B-REW has just one combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Best fit for a Mazda swap or substitute task. Throttle https://www.nwjdmmotors.com