May be the twin-turbo version of your 13B engine created to power the third-technology RX-seven released in late 1991. Every rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Perfect match for your Mazda swap or alternative venture. About VehicleHistory.com https://13bturbo2engineforsale04814.blogsuperapp.com/30287623/the-greatest-guide-to-rx7-motor