Does anyone possibly have the plans/drawings to reproduce one of those lifts? They have been around a long time and I don't think anyone is still attempting to sell them. Something even as simple as a basic drawing with measurements. A fellow race would like to make one but I never built one since they are heavy and take up a lot of room for me to bother with. If I had one, I would measure it and I would make a drawing and email it to anyone but I don't. It is something that is better made locally due to it's size and weight.
Ed