Without knowing anything about the prototype status or not, If you're worried about the load range, I wouldn't. If you run them with low PSI, and essentially exercise the sidewalls, they'll soften up. If after that, you decide you don't want to run them, let me know, I may be interested.
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As for wheels, have you checked into H1 beadlocks? that'll probably be the way to go, great lakes off road has some great centers you can weld in, thats the route I took.
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