How hard would it be to make one?
A good welder/fabricator, about two days.
Ed
First you'll need to find the original drawings or one to reverse engineer. You could do it with photos but there needs to be more angles and clearer that what's posted. It looks like the winch is some type of gear box - where you you find that? Arching the upright tubes is fairly easy. Anyone got a tubing bender for that 4" bottom tube?Ha! It would take more than two days. It would also be astronomically expensive to replicate as well..