Not looking for a show tractor. The part number is AR39029. I did not see any on ebay. The steering column is a hydraulically assisted mechanical gear box so it works without pressure to it. It just turns really hard, especially with the loader. I'll search for a factory pump at a reasonable...
I am looking for a used John Deere 1020 or Industrial 300 power steering pump. This is used on early model tractors. It mounts to front of engine under water pump.