1965 Dart

If anyone has them it will be Coker tire from Chattanooga, Tn.
Their website is coker.com and their phone number is 800-251-6336 They make reproductions of the old tires.

You sure dont want to drive around on 30-40 year old tires even if you could find them. LOL they would blow out and make nice scrap metal of your fenders.