You guys are the ones to ask
 

Hey every one, what years did they have atwin turbo 13b, and was the only one the REW?? aside from the cosmo? is there any way to identify it based off pictures or number on the housing or something? any info is greatlky appreciated. you guys will be seeing a lot more of me, build thread to come. i attached a picture, can anyone help tell what year or 13b model this is based of this one shit pic?? Thanks a ton in advance everyone.

13B-REW out of an FD.

Based on the harness I'm sure someone could tell you the year, or at least narrow it down.

that engine is 94-95 Rx7 engine JDM, you can tell from the non chrome intake nuts, yet it still has the separate coolant filler cap adaptor. 92-93 would be chrome with a silver throttle body elbow, 96 has a single piece thermostat neck, and different ECU connectors.

Mazda made the Cosmo twin turbo 13B from 89-96, it has a different intake manifold, different turbos, etc.

the FD engines were made from 1991-2003, the basic engine block stays pretty much the same, but a lot of little updates happen to the peripherals.