Build a kit and a one off ( your version ) and take it to a lot of the country musters and shows so the cockies can see it and get ideas for the properties an recreation they have in mind....
Sell it to them kit form....they can play, tinker and add to their hearts delight.....
plus why don't you make some good cattle and roo bars for Trucks and 4wds... ( there is a market for that )
