I've used these folks for new Pajero parts from Australia.
http://www.ozeparts.com.au/

I've used a couple of junkyards/breakers in Germany and England. Here's the link to the one in England.
http://www.carbreakers-uk.com/

I've also had good success doing searches on the eBay sites for England, Australia, Germany, etc. I've found that most folks are agreeable to ship to USA, when you offer to pay for postage.

Mitsu # 6 - 98 6G72 Montero Sport, Locking Rear Diff, Aisin Manual Hubs, 31x10.5

Mitsu # 7 - 02 6G74 Montero Limited