The TR-1will drive a kicker but, it may be cheaper $$$$$ to autopilot the big motor and use a connector rod to the kicker. The guys who use the TR-1 like the unit.
you wouldn't want it on the kicker motor only because then your main engine will be straight all the time and with that huge rudder not moving it will be hard to steer off the kicker alone. hook it to the main engine steering and then use a connector rod to the kicker and i am sure you will get 100 times better performance. the big engine doesn't need to be running for it to steer the motor itself.
the one made for kickers would be used by a person with a full inboard boat that has their kicker mounted in the center of the boat and steers off the kicker already. and cannot be hooked into the rudder beneath the boat with a steering connector rod.