Recently restored
JD, I just finished an extensive frame off on my M37CDN.
Basically, the main areas of difference are the engine and transmission.
The US used the 230cid which is about 4" shorter and is designated T245. The Canadian motor is a 251cid designated T249.
I cannot recal the difference in the transmissions, although I know they are different. I believe it is the shift pattern, hence the internal components are not the same configuration.
Although these things are different from each other, pretty much all the parts like seals etc are the same ones used interchangably.
As for body and frame, my truck was rebuilt using mostly it's original body with extensive bodywork. I did fit a few US parts such as rear fenders, running board etc. without problem.
I belive that the decision to build a Canadian version was at the time political. Our trucks were built in Windsor and used almost all US sourced parts. The drivetrain was wholly ours I guess to maintain a degree of "Canadian content".
You should not have any problems sourcing bits for a restoration, what you can't get here, go south to find.
If you need some sources send me a PM and I'll forward some names.
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