History on this Canadian Dart Swinger 340 Special

This is a real shoot in the dark everyone but I thought since I have no history on my car from before I bought it in the late 70's as a teenager maybe someone, most likely someone in western Canada, might recognize it and be able to fill in the some blanks. I purchased it in Edmonton Alberta in 1978 as a "repo" for my first car. It was originally purchased new from Pembina Motors in Manitoba (thanks Cliff Guinand for that history). These are the only pictures I have of it way back then. Any help would be much appreciated. Thanks Dan