Hi, Royse, and thanks for your response. I drove through Ionia County two days ago en route to/from a get-together at my sister's in Laingsburg.
The very first thing I checked when I looked at the tractor was the number of cylinders (there are four). Then I forgot to include it in my description. Duh! :-)
This one is a wide front.
The top of the grille does look different than the one in your photo, so maybe it isn't a 4000 after all. The hood has Ford 4000 decals on it, but a closer look revealed painted-over select-o-speed decals. Maybe whoever painted the hood slapped on the 4000 decals just for fun.
I did find two rows of numbers stamped into the flat behind the starter. My neighbor and I went to work with paint remover, sandpaper, and (of course) spit. We think these are the numbers:
They were very hard to read, so any of the eights could be a six or a three. And the nine could be a zero. But anyway, that's our best guess.
The rear rims are not adjustable.
Thanks again --
Mark W. in MI