Take very careful measurements before you begin this installation. The rudder can only turn a max of 35 degrees so rudder stop modifications will usually need to be made. To attach the linear drive to the rudder post a custom machined tiller arm from Edson or PYI will usually be required. I prefer the bronze tiller arms from Edson, they run about $500.00. Measure for this VERY, VERY carefully as there is no returns on custom machined parts!!
You do not want to use the radial drive as your connection point for the linear drive. It is extremely important that the linear drive be installed 90 degrees to the tiller arm and that it enters the tiller arm from either port/stbd or fore/aft with no more than a 5 degree offset/angle preferably 0 degree.
I have not done one on your boat but most boats require extensive glass work in order to properly mount the linear drive. Linear drives can exert upwards of 1000 pounds of force to the hull connection points and rudder shaft.
Drilling the rudder post and tiller arm, with the rudder in the boat, is a royal PITA and can take as much as two to four hours, with a SS shaft, so you don't work harden it.
