What Size 14" Tires? 70 Duster

Finally getting the stage of needing the car (1970 Duster) back on the ground and want to start looking for some used tires.

What size tires should I look for?

I will be using the following aluminum slot wheels:

Front: 14x6
Backspace: 3.50"

Rear: 14x8
Backspace: 3.50"