Contact Brian Unger (brian at ungerphoto dot com). He parts out Fords on ebay all the time and also sells direct. I've never been disappointed in the stuff he's sent me. He's in Mexico, MO.
I have a 9N I just acquired. It's in pieces with a cracked block. I'm going to part it out. It was running (they sway) when the block let go. There is a gas tank included in the deal that I will be selling. I haven't had a chance to thorougly inspect it yet. I'll have it home on Saturday. The hood on this 9N is from an 8N so I don't know if that makes a difference in the tank. Currently the tank is still attached to the hood.
As soon as I can get all the pieces home I'll be taking pics of them and hitting ebay. I need to have as much of it sold before winter as possible. A garage full of "blown up" tractor all winter will not go over big!