In customize menu, go to create player option, then move your right stick, and the edit player option will appear, and from there you can change kit numbers...However, I confirm that when you modify your squad, and enter a game mode: world cup or qualifying...the game messes up the squad, you have a forward as a goalie, a golie as a midfielder and so forth...so you have to reset again the squad before the first match and save your game mode...
By the way, as long as they keep the main colors of the uniforms real, I don't care about licensed kits...and I haven't found any important issues about uniforms after 16 teams or so checked.., in fact I like better Mexico's uniform in the game than the real one...
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