Goodyear Bluestreaks on a 66 Dart 273 Hipo?

They show as an option here.

http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1966/66_Dart0017.jpg

1966 Dodge Dart Dealership Data Book (Full Link)

http://www.hamtramck-historical.com/dealerships/1966DealershipDataBook-05.shtml