Would be the twin-turbo Variation of the 13B engine made to electrical power the 3rd-era RX-7 released in late 1991. Each rotor on 13B-REW has only one combustion chamber volume of 654cc. With two rotors, the entire displacement was 1308cc. Perfect in good shape for the Mazda swap or substitute https://sergiojkix21008.get-blogging.com/29100684/the-2-minute-rule-for-13b-turbo-2-engine-for-sale