Mate, this really depends if your getting it for practicality or for looks. If you are getting it encase of a flat, I would recommend just getting a can of that instant inflate foam and a puncture repair kit. It takes 5 mins to fix a puncture from flat to driving again. It saves alot of space and weight on the buggy.
Just a thought anyway, this is what I do and it works for me. But if you want it for looks/style, then just buy the hub=rotor combo on ebay.