We had one Canadian factory in Windsor, Ontario that built everything from Valiants to Imperials. Canada only has 1/10 the population of U.S. (something like the state of California), so certain things had to be commonized to turn a profit. For most of the '40's and '50's, our Dodges were Plymouth body shells and interiors with a Dodge front clip on it. We also did not get Lancers or Darts here until 1965. At that time, our Valiants were Darts with a Plymouth nose on them. We never got the C-body 880's in Canada either. In 1962, both our Dodges and Plymouths got Dodge interiors along with their dashes. This changed for 1963 and 1964, when both Dodge and Plymouth got Plymouth interiors with their instrument panels. Some of the series levels and exterior trim was different in these years from U.S. production, as well. In 1965, the regular Dodge and Plymouth lines went to the larger C-body shell. Chrysler Canada likely realized the restyled B-bodies, as Coronet and Belvedere were going to be a one-year-only abberation before a complete restyle in 1966. I think, in the name of economy, Chrysler Canada just decided to sit this one out, and wait a year for the new Coronet and Belvedere. Although both these series names were recognisable to Americans from older models of Dodge and Plymouth, they had no history here. Might as well learn new car names with a new line of B-bodies. This is all my opinion; the real reason may be different.