Ted I am in Alberta and grew up in Saskatchewan there is a yellow and black 73 I saw at the Warmen car show. It needed some work, if I recall it was a transition car with a dual pod dash but could be wrong. I am unsure if it was the owner or a friend that had it there. The name was Glen Nystuen from Saskatoon. Someone had reupholstered the seats and they had yellow piping on them. I had seen it at a couple car shows in the summer. It might be a lead that is close to you to look into.
Also there was this one that failed to sell from Calgary on BAT awhile back. BAT might be able to put you in contact with the seller. It was member @ea3528 on here, but they have not been active on here for a period of time. I should add that he was moving further west to Kelowna.