We have 15 x 6 on the front and 15 x 7 on the rear...the TTO's will limit your tire size due to their backspacing. You could use the tires you have without a problem...probably 235's on the rear and 215's on the front would work with the Torque Thrusts...maybe a little more...those are 67 Chevelle/Chevy 2 dog caps on our 70...something different from the million other cars with COPO caps
