Try custom boots maybe (although that may get expensive, depending on budget)? The only company I can think of that might be able to do custom is Daytona (which happens to be a German company - everything is done by hand, like Held gloves), which has a dealer in Fremont, Ca. Here is all their information:
It wouldn't hurt to maybe give them a call and see, or maybe they can direct you and your friend elsewhere? Good luck.