The engine cleanup, reassembly, and painting is done. Ended up being lots and lots of work getting the new engine to look like the old one. In the process of swapping for the right parts, relocating existing parts, and cleaning and painting I have had every part of the engine off and apart except for the head, injectors, camshaft, crankshaft, pistons/rods, and thermostat..
Engines have been swapped with help from a fellow stovebolter. New engine runs and truck drives again! And so far not a single drip or leak, not even a drip from the air box drain tube which is expected to drip (and probably will soon).
On the list of things to do are: Machine pulley to bolt on camshaft to drive air compressor. Make front air helper spring brackets Make goose-neck hitch subframe, already have plans done. Fit the cab around the engine which should only involve widening the indentation in the firewall. Get it together enough for a real test drive; fenders, headlights, and a brake light, possibly wipers. Swap rear axle gears and install air operated differential locker, already have gears and locker, need bearings and seals. At some point actually finish the whole truck....