Quote Originally Posted by luxlunae View Post
Not sure if everyone already knows this, but you can unlock an MOP reputation for bonus reputation in dungeons at 85 (maybe lower?) by using one of the boa 1000 rep insignias from the zandalari warbringers.
Unless it was changed, you should be able to unlock any reputation from Pandaria by just talking to any member of that faction at any level, but you won't get the option for bonus rep until you are able to use the dungeon finder (level 15).