Nothwithstanding the probably hundreds of restored '69s with them there is no reason to believe ANY 69 was built with RWL Goodyear Polyglas tires.
Goodyear Wide Tread GTs, Firestone wide ovals [small letter] Uniroyal Tiger Paws were all used but only the Wide Treads are in repro.
Like the man sez don't even think of putting 37 year old tires on a car.