who makes this in N scale..

[csxengineer]

.. or at least a wood caboose that could pass for the same (I'm not a rivit counter)
Preferably already built.

Thanks

P.S. Thanks to wherever I downloaded this picture from, cause I have only found a few pictures from this "Unity Railways"

 

[csxengineer]

this too...

and inexpensive (no brass).

 

[Ray Marinaccio]

Minitrix and rapido made some wood cabooses. Not sure if they are a close enough math though. Not sure how you feel about kit-bashing. Could be bashed from one of these and a set of archbar trucks.
This is the minitrix

 

[Ray Marinaccio]

The Rapido

 

[Drew1125]

I believe Con-Cor & Micro-Trains also make wood-sided cabeese.