Small update!
Clunk: Found the source, its the idler gear assembly in the transfer case! When I rebuilt it the gaps were all within spec so not sure what is going on. It only happens when reversing in certain situations so maybe I'll live with it for now. I dont want to take the truck out of commission right now to rip the transfercase out. Maybe in the winter.
I have been driving the truck around a bit. Its been so fun.

Fixed a oil leak that popped up at the oil filter canister (bottom of the truck got a good layer of rust protection now) and adjusted the shifter linkage as it was not quite there. Now its all working nicely.
View attachment 4182337
@LCMoneyPit , a fellow local early cruiser owner, was looking into getting a new windshield for his 40. Mine is also in need of replacement so we decided to knock both out. Found a local place that can cut them for about $130 each, not bad! I took my old glass out and discovered whoever cut the glass apparently just wanted to get it done quick. A couple of the corners are...... crap.
View attachment 4182338
Also found some classic rust. Cleaning up then I'll repaint before a new gasket goes in.
View attachment 4182339
The adventure continues!