Realtime 4WD. That is where our CRV gets their stuff. For the US, a few of the 88-91 Si Civic Wagon came 4wd.

In Japan, they had 4wd Civic four door and Ferios. I've never seen the one posted...but I have seen the EG and EK 4WD Ferio VTi and RTSi's. The VTi had the D16Z with Realtime 4wd...I've only seen this on the EK. The EG had the RTX dual carb ZC 4wd and the RTSi ZC SOHC 4wd.