I have the Coker "nostalgic" radials" (6:50 x 16) that look like bias ply. I really like the way they perform.
If you are after an original look, have you tried looking for a set original wheels and caps? The 6 inch wide wheel and larger tire size that you are looking at will give you a great ride but may be a bit hard to steer at low speeds. Of course, they shouldn't be any harder to steer than what you have on already. Your choice would look nice however!
