The three Meteor model lines for 1965 were Rideau, Rideau 500, and Montcalm . . . I thought that the Montcalm was the lowest-priced version (which the puzzle car looks to be), but I must have it backwards. What the actual difference would be between a Rideau and a Rideau 500, I have no clue - but if it isn't the Montcalm, it has to be one or the other of those.