yes the floor is wood. The sides and the strips it attaches to are all more than a little rusted out.
I bought the truck from the original owners son. I have the original sales slip on the truck somewhere.
He told me his Dad had to special order it and it took a while to be built.
It is a W200 but the suspension is massive and it has free floating hubs in the rear with Dana 60's front and rear.
I emailed Matt. I know i contacted him a long time ago, but not sure he was making the later style sides.
I suspect it would have not changed from the 1959 3rd series, but I don't know for sure.
The kid is going to start learning to weld and he hopes to be able to patch it all up, but there are a lot of thin and rusted spots.
Thanks for the help.