May be the twin-turbo Variation of the 13B engine created to electrical power the 3rd-era RX-seven launched in late 1991. Each individual rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Best healthy for just a Mazda swap or substitution https://edgarnxdil.spintheblog.com/30141688/mazda-13b-motor-for-sale-an-overview