Got the bell housing, flywheel, clutch removed. Sure enough, the rear main looks like it has a small leak. Good thing I've got a new one in order.
My throw out bearing was partially seized; got a new one of them too. Also ordered the spring clips that hold the clutch fork to the throw out bearing, inspection covers and boots for the bell housing, new gaskets for thermostat housing, water pump, timing cover, fuel pump, and oil filter housing.
I've found a number of after market bolts; it obvious this truck has had clutch job sometime in the past. Those will be replaced with cadmium JIS harware. I also noticed a lot of missing bolts; those will also be replaced with CAD JIS hardware.
The flywheel looks nice. I'll just clean it up well, and give the outside a fresh coat of paint (not the mating surface obviously).
Oh and good news; my pot blaster comes in today. I'll be going to Tractor Supply to pick up about 400lbs of blasting media later this morning.