If this plane has a pull pull rudder like it looks it would be simple. Run another pair of cables back to the tailwheel parallel to the rudder's set but these would connect to the tailwheel. Instead of connecting the cable directly to the rudder arm I'd put a short springs in there to save the servo. This is only a guess on my part though. From the pics I wouldn't want to have to put this thing in but I do believe that would be a good way to rig it.