They're hard wearing, but they're also bias ply tires, not radials.
I'm guessing a 180/65 B16 81H would work in the rear, and a 150/80 B16 77H for the front. Probably. Unless that 150 is intended as a rear also - oh well, any knowledgeable tire seller should be able to steer you right.
I'll stick to my Cobras. 15000 miles is pretty decent, they handle awesomely and I love wide whitewalls on the Touring. You'll probably get 10000 more out of the Commander II's, but... Avon all the way.