Actually that wheel was an option on 1970 B-body models too , seen one on a 70 Coronet R/T and one on a Superbird!!! Seen some c-body cars with them in a junkyard near me, my old FM3 70 Dart also came with it but I replaced it with a tough wheel. Seen one of these rare wheels for sale on eBay awhile back, was NOS....shoulda bid on it cause it didn't sell for much cause the seller didn't list it right.