Dave have you looked at the layout of his steering?Check your private messages.
There might be a guy who makes ps kits
Dave
What I saw in pictures of from this guy was a true hydrostatic setup with new steering column & hydraulic valve + hydraulic cylinder.Dave have you looked at the layout of his steering?
It's not a setup that normal add on Power Steering will work on because the steering box is under the front center of the tractor.