The process changed in 1949 for Ford USA. Transmissions were no longer stamped. Frames were stamped and in some cases there were tags attached with the VIN stamped on depending on year. Canada did things differently than Ford USA but they did tend to follow the same or similar directives. They generally had their own numbering system. 1954 was the last year for flatheads in Canada. Not all Canadian vehicles were so equipped but trucks were. There were still truck operations at Windsor but Oakville truck plant was comming on line too and I think they started a different numbering system in there somewhere. This is a good link for Canadian numbers.
https://www.ford-trucks.com/forums/1337738-the-canadian-vin-info-thread.html
The VIN plate would be on the left front door frame but may be on the right if it has right hand drive. The stamping on the frame could be on left or right frame rail either close to the cross member or near the shock mounts.
What size truck is it?