Hot Rods Tire picture request: Firestone 640 & 700

Hi all

Looking to buy some new tyres for my A coupe.

wondering if anyone had any photos of a 640 front 700 rear combo at all?

The 820 seems to be the preferred rear. But the 700 has slightly wider tread and is very nearly the same diameter in size. Any comparisons/experience on these two tires would be very much appreciated

cheers