May be the twin-turbo Edition from the 13B engine intended to electrical power the third-technology RX-seven introduced in late 1991. Every single rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Best suit to get a Mazda swap or replacement https://mazda-rx-7-engine36036.blogitright.com/29889987/13b-engine-for-sale-japan-can-be-fun-for-anyone