Interesting debate, I live in Canada and had/have lots of opportunity to buy Canadian GM documented cars without OE engines, trans etc. The last two Z's I have purchased were out of the US, both numbers matching and with original paperwork. For me getting a numbers matching car with documentation made more sense than buying something with GM Canada docs and no OE drivelines. I agree the GM Canada docs are pretty much bullet proof but human nature is not....Re-bodied cars and other funky stuff people do to make money happens all the time. A few years ago I checked out a '69Z with GM Canada docs, was a rare car as it had an unusual color combo, upon my inspection I found a fake trim tag and the vin plate on dash did not have the original rivets...but the owner was bragging about the GM Canada docs, I left the car where it sat and apparently it was sold to an unsuspecting buyer who bought into that hype of GM Canada docs.
