May be the twin-turbo version of your 13B engine built to electric power the third-era RX-7 released in late 1991. Each rotor on 13B-REW has a single combustion chamber quantity of 654cc. With two rotors, the total displacement was 1308cc. Ideal in good shape for your Mazda swap or substitute https://chanceqokif.idblogz.com/30296013/13b-turbo-engine-for-sale-for-dummies