The good news is that the Canadian Army bought some standard Ford GPW jeeps. I used to own one that was made in April 1943 and have seen several other ex-Canadian Army GPWs from 1943. They were standard US model GPW jeeps and the only ways we could tell that they were ex-Canadian Army and not brought to Canada as surplus by hunters etc. after the war was:
1. Old Canadian Army markings painted on these vehicles.
2. Sometimes there was an extra home-made data plate added by the glove box on the dash.
3. Tires might be marked.
My April 1943 Canadian Army GPW had Canadian Army post-war markings (DND number over wheel wells and markings painted on the windshield panel "DEFENCE RESEARCH BOARD - EXPERIMENTAL STATION" - the DRB was post-war and was in Suffield, Alberta where the British Army has its BATUS training facility) and one tire had a Canadian issue mark - a C with /|\ issue arrow inside the C. That jeep by the way was last seen in Gordon Cumming's collection at Crown Surplus Store in Calgary, Alberta.
At the end of World War II, the Canadian Army had hundreds of Ford GPW jeeps in Europe. Most were purchased, but a few had been stolen - e.g. from the Americans. Some may have been captured from the Germans or found abandoned by the Yanks. The Canadians would simply paint over the markings! A friend of mine Doug Lunn RCAMC had to do this to a jeep stolen from the Americans in France. My regiment, the Seaforth Highlanders of Canada apparently had a stolen jeep and I was told by a veteran that they painted it the same as one of their officially issued jeeps - and they had to make sure that they did not park the two jeeps beside each other as they both had the SAME War Department number painted on the sides of the hood (bonnet to the British)!
Canadian jeeps rarely had radios insatlled and it is rare to find photos or instructions for installtion. When the No. 19 Wirelss Set was installed, the main antenna was mounted behind the jeep, on a bracket underneath or attached to the spare Jerrycan carrier. From the side, the mount looks a bit like a "Z" (if you stand by the spare tire and look left at the mount. At the bottom of the "Z" was probably a simple bent section with some both holes. The top section of the "Z" would likely have a large round hole surrounded my small bolt holes to mount the standard 19 set antenna base. My reference books are in storage so I do not have the antenna base model number.
There is an excellent site on the No. 19 Wireless Set and also there are excellent books by Louis Meulstee "WIRELESS FOR THE WARRIOR" that expaln maounting radios in British and Commonwealth vehicles.
I do speak some French if you cannot understand what is written here.