Could be the twin-turbo Edition of your 13B engine created to electricity the 3rd-era RX-seven introduced in late 1991. Each rotor on 13B-REW has an individual combustion chamber quantity of 654cc. With two rotors, the entire displacement was 1308cc. Best in shape to get a Mazda swap or alternative undertaking. https://lorenzolcztm.kylieblog.com/31383738/fascination-about-rotary-engine-rx7