Thanks for posting, and your inquiry about the history of your car, I think you are aware of this forum (link below) you might get
some information there, It is in French, but you can use Google translate. Coralsnake who posts here is mentioned in that forum,
though he is mostly about '68s he might be able to help, he does have a lot of info on his site about Sud Auto where your car was
sold.
I've included some images (they have been here before, maybe on forum 1 ) that I took at Sud in the summer of '67. From the
2011 registry, I see your car wasn't sold till October, maybe the one in the photos is yours, the resolution is not the best so I'm
not sure if these are 350s or 500s. Also a photo from '68 of unsold '67s on the lot at Sud, that some one else posted.
The original owner M. Archanbault (spelling ?) would be getting on now, if he was in his 20's when he bought the car he would be
in his 70's now.
Also added a link to the Canadian Motorsport Society Facebook group, you have to join both these forums to post.
https://tribuneauto.forumactif.com/t16481-sud-automobile?highlight=Sud+Automobilehttps://www.facebook.com/groups/476034632601421/?ref=nf_target&fref=nf&__xts__[0]=68.ARDjAx8BJ-JC4d8vnatD_5-jRPFSExCX4XjYzI8gudkHcysIsJobd4dsoy8HsBxBXtrLXBhD8GYr_rKekA72CKbH4CrXOLSfBnAENeI8eZ-HX-cl-49m-qJ9RYDhVzLDBmZmGlC2YI8c1oovmZMHfW1ATOJtUJ0zuBvh1fxcvmEg5c_LleCA3FJBdbkB57PYIck6yNKWAOrGsf1aQMWWtyk1EkJ8s96UtI0T6sjZLrDYPeU6VGwnRsojKJCdVy2wzlKVyWiZOgSP78MWtLKXmIHS52kmsAa-LGouD2fbn9D1un5TusZ-Qb0
Also a link to Autocourse.ca, another forum out of Quebec, there were a couple of '67s raced in period at the St. Jovite, Le circuit
track in period that were from Sud. You might be able to get some help there ?
Lot of resources, as I said you might know them and have exhausted those avenues, hope this is of some help.
http://www.autocourse.ca/index.php?file=photos.htmlMike (honker on the forum) I am in Canada, just east of Toronto.