Wow, Kosovo. That's amazing. Did you buy your truck there? And congrats on 250K, I'm 14K away from that same milestone.

Can't help with the manifolds but on the other things, here are a couple of suggestions. You may have already tried these options but just in case:

Hatch - how bad is the rust? If it's still at the paint bubble stage, it can be stopped (though not fixed). See this thread. Others' experience and my own are both spelled out there.

Transfer case motor - I haven't had issues myself but there are many threads where people have gotten theirs to work over time through various methods. Might be worth trying those in the meantime while you're looking for a way to get the parts over to you.