Valiant Barracuda

In Canada, they were just Barracuda's, not Plymouth Valiants, as they were sold by both Plymouth and Dodge dealers.

Not quite. In Canada they were Valiant Barracudas in '64-'65 and just Barracudas in '66. The '64-'65 Valiants and Barracudas in the US had a PLYMOUTH badge on the front of the hood; Canadian units had a VALIANT badge in the same location and VALIANT letters on the deck lid. In '66, the US cars had PLYMOUTH callouts in those same locations, which were simply left off of Canadian units.