Cliff
You likely can mount that spinner anywhere that it will fit (with the 'spokes'). Reason I say that is the steering wheel will not stay in the same place realtive to the straight-line direction the tractor is going. This is due to the hydraulic power steering, which is not 'geared' between the steering wheel and the front wheels. This may not be very clear, but drive straight down the road and see if the deer symbol in the center of the steering wheel stays in the same position. I suspect it will be doing slow backward or forward summersaults as you drive.
In the old days, when no power steering, that spinner would stay in position. Then all you had to do was be prepared for the spinner to be torn out of your fingers when the front wheels hid a dead furrow or a rock (not as bad on Deere tractors with fancy front axle on the row crop tractors). Even when getting power assist, the steering wheel was 'geared' to the front wheels. Now, its different.