The Garfield mod by Kalomaze seems like it would be fun to mess around with, but there are no UI elements and there is no voice pack. If one of you would be kind enough to make them, that would be great.
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It's really hard to edit mk8 voice packs, mainly because if the new file is a little over the original file (like 20kbs) the whole damn thing won't work or the game will crash. I've been working on an SMG4 voice pack and it is painful asf. Good luck (: