Would be the twin-turbo version of the 13B engine made to electrical power the third-era RX-7 released in late 1991. Each individual rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Best in shape to get a Mazda swap or https://rx7-motor79123.uzblog.net/new-step-by-step-map-for-rotary-engine-rx7-52461822