It's important to know that Feral Heart changed the type of rendering systems and game base ever since the update. So things that used to be compatible with the game, might not be anymore. Feral Heart is now running on a different, I guess I could say platform, instead of what the game used to run on. Because of this change, some things may not be read correctly unless they are changed along with the game itself. Also, as for the items, only you would see the item pack you're using on your characters and anyone who has the newer pack would see the items for that newer pack. Meaning you could be holding a rose in your mouth on your screen, but to other people it could show up as you being a tank. So I think you might want to really think about whether you want this before messing with the game files anymore, aside from the fact they might not work for the game anyway.