When did you last flush your transfer case? And did you do it right? I know, but it's so easy to get wrong if you haven't done it in a while. It's the one on the flat back of the case, behind the handbrake drum, matching axle drain plugs. Flush it thoroughly (props off, drain, fill, turn over in 5th and reverse, drain, fill) and see if that helps. If not you may be looking for a rebuild.
When did you last check your timing belt? Regardless, I think you want to have a look.
Power steering belt is quite close to the injection pump, so check that thoroughly for condition too. Could be causing a ticking noise if dirty or worn.
Have you had a good look at those hubs and shafts? Dead easy to pull, and never hurts. And what about the rest of the drivetrain? A prop shaft joint worn (prop off and check UJ bearings for play) or flange loose (make sure the bolts match and tighten them up) can both make a hell of a racket,.and something caught up and wrapped around a flange (transfer case output and diff input) can wreak all manner of havoc.
Rocket shaft seats.
Without knowing where all the noises are coming from it does rather become a matter of going through the parts catalogue.
