I do not recall what tires the ones in the picture were... they were pretty old and beat up, so I replaced them with these:
Cheng Shin C265:
Cheng Shin C265 Rear Tire - Chaparral Motorsports
I'm not sure what you mean by re crank seals, but I am always concearned with the condition of all the seals and gaskets that I have not replaced because after all it is an old bike.