I've upgraded to a below decks linear autopilot and have a working, ST 4000 Plus wheel pilot with remote
control ST 600R, helm mounted control head, flux gate compass, wheel drive, and sunshade for sale. Asking $450 plus shipping. I had this unit on a Beneteau 351 and it worked great, except in real heavy weather.
This unit would be a great spare or primary on a smaller boat.