'67-'69 Barracuda rear tire size

On the wife's '67 Cuda, I have wheel vintiques Ralley wheel @ 15 X 8 with 26.10 X 10 Mikey Thompson tires with an &-3/4 rear. 4.5 wheel back spacing.
Clearance, 1-3/4 inch to the spring at the rear of the tire.