Dear Leigh !
I seem, I have some information for You.
1) If You want to see military style wooden body - see this image:
I seem, this is all-wood body. I have read, model "3116" was the same model "4409", but with short wheel base (134 1/2 inches). What wheel base have Your truck - 160 inches, maybe ?
Below is the model "3116" with such body in service - here the Russian infantrymen moves to frontline during World War 2:
"Chevrolet 3116" trucks were supplied to Russia during WW2 under Lend-Lease agreement - about several hundreds (or, probably, even some thousand) trucks were supplied to the USSR in total.
Other "3116" truck with Russian military registration on cab door is below (note same body style):
2) Try this link necessarily:
http://www.46chevytruck.com/
I feel sure, these guys are the experts about such "Chevrolet" trucks - try to ask them about some help. And if their trucks are mostly 1946 models - these models are identical to Wartime models, of course.
There You can see many links to sub-pages;
for example, on page
http://www.46chevytruck.com/FAQ.htm You can find some "Chevrolet" FAQs and even several scanned Manuals (as ".pdf" files) on these trucks - click the Manual's images and download them !
And - WOW! - in "Unit-designed Chevrolet truck bodies" Manual (see first book image on this page) You will find very good detailed photos of different bodies, including wooden bodies. And in "Chevrolet Trucks 1946" book (fourth book image on this page - cover page of this book have "Chevrolet" emblem with word "TRUCKS" within) You will find side view of model "4409" with wooden body and it's dimensions !
In "1946 Chevrolet truck data book" (350 MB, 189 pages in total, second book image on this page), on pages 106 - 107 You will find much better view of model "4409" with wooden body with dimensions and good technical data on this truck. This book contains images of giant amount of "Chevrolet" models and their technical data. Also very useful technical information about engines, springs, cabs, clutches, etc, etc is in this book.
Enjoy !
Note ! In all these books the
civilian wooden bodies are shown - they have
34 3/8 inch width openings in left and right sides of body.
But all is simply - with elimination of these openings, we shall have military type body !