No the 3G Civic/1G CRX have different mounts than the 4G Civic/2G CRX, so it will not be direct drop in. However all you would really need are some 4G b-series mounts and you would be good to go for getting it in the car. And you can't swap the rear discs from the CRX because it has a solid beam rear axel and the Sedan would have independent rear so none of it is the same.

But why not just buy the CRX and fix that up? Its lighter than a sedan and it already has the engine in it.