The thread 
Canadian Chevrolet Maple Leaf 4x4 artillery tractors? has some info on what this most likely is: 
	Quote:
	
	
		
			
				
					Originally Posted by  Hanno Spoelstra
					 
				 
				I have not heard before of Maple Leaf trucks being supplied to the KNIL. I have looked through my references and found a vehicle which fits your description in Bart Vanderveen's The Observer's Fighting Vehicles Directory World War II (revised edition), p. 233: 
 
"Truck, 30-cwt, 4x4, Gun Tractor (Maple Leaf) 
6-cyl., 80 bhp, 4F1Rx2, wb 134 in. The Maple Leaf was a product of GM Products of Canada Ltd and could be described as a heavy-duty Chevrolet. This unit was produced for Australia, where it was fitted with GM-H cab and fixed-side body." 
 
The picture (sorry, no scanner) shows a chassis/cowl (front end sheet metal plus windscreen) on large (20"?) tyres and a spare tyre fitted behind where the cab would be. 
As noted by Vanderveen, "this unit was produced for Australia", but I cannot recall seeing pictures or references of these in Australian Army use. Did GM Holden deliver vehicles to the KNIL? 
			
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 Now with the picture from Vanderveen side by side with the finished truck: