In Reply to: 8N with Ferguson TO20 hydraulic pump linkage and top plate posted by Kevin on May 07, 2018 at 09:13:11:
Lots of parts for the 9N will swap with the TO-20. The Ferguson had a different engine but most everything else was designed using the 9N plans as a starting point. There were many things that Ferguson wanted to improve, but Ford would not agree to do. I would expect to have problems swapping some parts. IF a TO-20 top plate will mount on the 8N, you will also need to swap the TO-20 belly pump to match up the control linkage.
When a farmer has two broken tractors with different problems, it is fairly common to put all the best parts together to make a working tractor with lots of usable spare parts left over.