Those tires are military Michelin XZL in size 11.00-16, I have the exact same set on my '79 1 ton Suburban. They tape a bit over 38" in height and are radials and last 50,000 miles! Pretty good tire for $100 each!! (surplus military, in 90-95% condition/tread).
Oh yeah, the truck aint bad either, but probably has a gutless flathead engine in it!!;)
