Update:
Well the more I looked at the 10' long template, I didn't like it. So I scrapped that idea and made a 8' regular Genben out of masonite:

Then cut the deck down to 8' and mounted the sides.

Interior skin on....



I am wanting to build the frame myself. I haven't yet because I needed to practice TIG welding a little bit before I built the frame.
I think I have my welds good enough to build the frame. I bought some scrap tubing and welded up some joints:

I am also building my own axle, and etc... Also welding up my own aluminum boxes on the front.
More to come...