A friend of mine is still running a set on his '70 Charger. He put them on in the early 70's and after all these years they still look like new.
I was always leery about the combination of aluminum & steel that the old Cragar SS wheels used (even though I chose Keystones which are made the same way). I'd heard that the aluminum centers could break away from the shells if you hit a curb hard, but I never knew anyone that had seen that happen.