I have owned 3 Canadian built trucks, a '64 Chev, a '65 Chev, and a '66 GMC that did not have factory seat belts.

Installed them in the '65 at my Dad's insistence, wrecked that truck, then installed the same belts in my '64 (which used to be my Dad's) as by that time I was the Dad and had 2 little guys to worry about.

Garry