Well…no, not really. "Plodge" is not an official term or name, it's an attempt at being witty by some American wag writing or talking many years ago about non-US-market Chrysler Corp vehicles* which had a mix of US Plymouth and Dodge body components, that's all.
Technically, your car isn't a Plodge at all; it was not built with a single Dodge or Plymouth nameplate anywhere on it. It is a Valiant. Valiant was its own car brand (like Imperial, Chrysler, DeSoto, Dodge, and Plymouth) for 1960 in the US, then it became a Plymouth model for '61. But in Canada where the cars were sold at all Chrysler Corp dealerships, Valiant was a brand clear up through 1966.
Canadian Valiants used the US Valiant front end on the US Dart body for '63 and '64. That's how they were (all) built, because that's how Chrysler Canada's product planners decided they would be built.
*Whoah…like…there's other countries and stuff, like aside from the United States of America? And they, like, do stuff differently there, and have different products in the market? Git outta here; next you'll be tryna tell me they have, like, different governments and stuff.