Could be the twin-turbo Edition from the 13B engine designed to electric power the third-technology RX-7 released in late 1991. Every single rotor on 13B-REW has one combustion chamber volume of 654cc. With two rotors, the overall displacement was 1308cc. Excellent fit for your Mazda swap or replacement job. Universal https://mazda13brewmotorforsale94689.blog5star.com/39325456/rx7-engine-fundamentals-explained