Auto helm???

[clinker lifeboat]

I have a 30ft gaff cutter clinker built boat with a traditional wooden ships wheel about 2ft dia using a teleflex cable to a bracket on the side of the rudder. (she's a proper double ender with the rudder hung off the stearn.) Does anyone know of an autohelm that can be fitted to this type of system as I cannot fit the wheel unit to my wheel.

Thanks everyone who replied to my last thread, you guys are making old wooden boat ownership an awful lot easier to justify to the missus!!!