You were quick to find the 'bolt! Nice score!
The wood should not be too bad to make, most of it is looks to be in decent condition and at least good enough for patterns. You may want to consider using tube steel when replacing the wood. It will hold up better, last longer and will not be seen. If you insist on using wood, find someone that does the wood for Model A's or woody wagons. It won't be cheap, but it should be doable.
Contact
Ron Brazell he once owned
this one! .
