Welcome to the CCIGT site Keith. I believe you'll like it here on the site. We not only share our tractor experiences but also have some fun in the process. Yes, as Spike has mentioned these old metal Case tractors have a way of finding new homes. Please post some pics of your 446 when you can find the time, we all enjoy them.
I have purchased enough parts for a complete restoration of the onan in a 646Bh. Oversized pistons, camshaft, valves and guides, starter brushes and bushings, and gaskets. You may have the advantage of shipment to a drop across the boarder from you and save on customs. I try to bundle orders then pick them up when visiting family in the US.
Spike, it's a short drive across the bridge to beautiful Michigan .My wife and I have done this pre covid restrictions to pick up orders there. I can't believe how much the members are willing to help already. Pics will come in time, cleaning the yard and getting ready for the changing season. Trying to find info on my own here, so I am prepared to ask questions with some basic knowledge of the subject. cheers everyone! keith