Well, the 16" rim situation turned out to be a big miscommunication. The fellow with the 16" rims also had 16.5" rims, and thought I was interested in a straight trade
I pulled the trigger on some 9.50×16.5 Firestone Transforce rubber for the front, and 8.75×16.5 Firestone Transforce for the rear. By the time the new rubber needs replacement I will have had many years to locate some 16" rims.
Interesting fact; the lug nuts on the driver's side are all left hand thread. I was looking at the threads and my machinist brain screamed "that looks wrong!?!" Gave all of the studs a touch of PB blaster and let them marinate while I did some chores. Kinda nice that they are stamped with an L, and the passenger side is all marked R.
My boys were excited to finally help with something, so I had them raise the truck with me, place it on stands, and remove the front wheels. Let each boy do a side, to try and minimize fighting. They don't know how good they have it, being able to use power tools. My dad would have had me using a ratchet and a pipe.
With that, the drums are exposed and ready to get knocked apart, another day.