Madmooner,
Yes it was a kit from Greg Tatman out of Springfield Oregon... he is no longer in business
Ply over frame?
I’ve been wanting to build one for a while.
Yes plywood sides and bottom over a frame. I built it 20yrs ago so I am not up to speed on current kit manufacturers. But it is a very traditional construction and I am relatively sure the current kits are the same. Many of the tricky compound angle cut's were already done by the kit manufacturer. To build one from scratch is do able if you have good woodworking skills and a set of plans.