Canadian Chevrolet Maple Leaf 4x4 artillery tractors?

[David_Hayward (RIP)]

I am conjecting that the 1941-on truck is a 1942 Model MS, My list of all US Government QM contracts lists all US and Defence Aid contracts. From that I have a suggestion that it could have been one to Contract DA-TPS-0335 which was a Right hand drive Export MS Model 4403. However if it was lhd, then the candidate was Cab with Cargo (Export) to DA-W-398-QM-418 with Bid Request No. 2099 Model 4403.