just looked at the ones I have cheesecake.
not in that great of shape.
personally I would go with the vintage speed tire if no one else has one
they are molded almost exactly from a tire of the era.the tires really don't have to be vintage,you be better off with a new tire.
cheng shin also makes some
4.10/3.50-4 Go Kart Slick Cheng Shin Tire