The axles look like the stock ones.A closed knuckle 44 front and 12 bolt rear.I know the older trucks used a divorced t-case but I've never seen a 67-72 with a divorced t-case.It looks like a Rockwell T221.
You can probably get away with just swapping lockouts and be alright with that issue but you might as well get a open knucke disc brake axle.Any axle from 71-87 will work.If you get a Corp.10 bolt front you need the spring plates from it and different u bolts.Those look like one ton springs with FORD factory lift blocks