I though about the same Aussie set up myself. Just mount up a rear steer rack out of a Cloud car or something (keep it Mopar?) and get it high enough to clear speed bumps and then make some brackets. I think the steering was gonna be really slow and the turn radius was likely going to be 3 lanes. The Steering shaft would have to use 2 U joints and it would almost go down through the floor....But for straight line steering, it may work just fine.
