If a Deuce was purchased in the U.S. and a EUC (End Use Certificate) was required, there are significant restrictions.
1. The vehicle cannot be transferred to a non-U.S. citizen, even if they have permanent residency in the U.S.
2. The vehicle can only be legally exported out of the U.S. if an Export License is applied for and issued in the U.S.
I don't know how difficult this is to do, but the seller of the vehicle covered by an EUC must apply for the export license. He cannot sell it to you without the export license being approved prior to the sale. I would recommend talking with some of the MV dealers in the U.S. that routinely export such vehicles and ask them how to proceed.
I have no idea about the rules in Canada about importing the truck, but I suspect you will have minimal problems on your side of the border.