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					Originally Posted by Jacques Reed  I am of the understanding that old truck bodies are always mounted on wooden battens along the entire length of the body and chassis to uniformly spread out the load. | 
	
 Not sure about the Australian-built bodies, but as far as I know all the British and Canadian bodies had wooden longitudinal sills.
See 
15-cwt GS body: 2H1 composite wood and steel for some detail drawings and photos. 
The all-steel 2C1 body on my F15A has U-shaped steel channels as longitudinal sills with wooden inserts which rest on the top of the frame rails.
