Drained and refilled the transmission, Blasted, painted, and mounted the new tires on the wheels.
Once I got them mounted on the tractor, I greased every zerk I could find and lowered the "operating table" down so I could finally drive the 106 off of it and out of the barn under it's own power!
Talk about satisfying.
After running a few experimental laps around the yard with the lawn sweeper, I had enough of a bruised tail-bone to put it back into the barn for the night.
Took the hood off the following morning and forced myself to learn how to weld sheet-metal, since the hood was cracking on each side near the bolt holes. Wired up a headlight switch in the stock location, and made a temporary stack out of a transmission fill tube I found laying out back in my scrap pile.
Definitely installing a stock muffler when it gets here. Picking up a seat bracket this week hopefully. There's some other small details that need addressing, but another large milestone has been passed.