Could be the twin-turbo Edition of your 13B engine built to electrical power the 3rd-era RX-seven introduced in late 1991. Every single rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Perfect healthy to get a Mazda swap or substitution https://rx7-engine86292.izrablog.com/39311669/the-13b-turbo-2-engine-for-sale-diaries