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I've thought about it. There are a lot of aftermarket options for those things. Super chargers and everything...

Nice. That would be bad ass if you could lower it and get it up to highway speeds. You would have to tag it. Depends on your states laws.

The old Z's are street legal. Came with lights, signals, horn and everything. It is super easy to put them on the road. Just search Z50 custom monkey bike and you would be amazed with what people have built.