M135CDN

An M217 is listed as a gasoline truck with a tanker body . It is more likely that the truck is an M211 cargo truck, which has the dual rears the same as the M217. Either that or it has had the tanker body removed and replaced with the cargo body which seems unlikely. The other truck peculiar too Canada was the M207 which was a dualed chassis with specialty bodies added. Sorry if that muddies the waters even more for you!
I have a restored M135 CDN and as some of the other G749 fans on the site have said they are a nice vehicle to drive. They don't roar, snort, smoke and smell of diesel, so not a testosterone hit. They are queit and with the automaic tranny fun and easy to drive. They have their quirks ( code word for rat hole too p**s money down ) but then thats their allure, something always need looking at.