I am borrowing the parts from a friend, it was only half assembled when I got it. No plans that I know of, but if you are interested I could give you a build list.
One of the upsides to having to patch the floor is you take the old undercoating crap off with the bad section!
I have since been told that playing with undercoating is potentially hazardous and I have been wearing a respirator since.
Anybody want some cinder blocks? You just pay shipping!