are you going to be selling them? if you are then you need to get permission. and if they are really good. and strong then i might consider buying one if the price tag isnt too much.
I'm pretty sure Mullet is just having the only one made for himself, and the way he made it is using and old blade fork tube and welding his metal design on the bottom.
He should be home soon to answer your questions precisely.
Note: The forks will tear your leg some serious sh!t should you happen to hit it. I've recommended to Mullet about foam or rubber strips to cover up those edges, dunno if he'll do it though.