Wow, good catch on the emblem. On the 72, it is correct to have the 455 emblem there on the front fender, though that one is not in the correct place. Should be b/n fender well and the marker light. That emblem would be on all 72's w/455's, except GTO HO. On an HO lemans, you wouldn't know, as they did not place the call out for HO on the lemans. I talked to the original owner of my HO lemans and he even stated that there were no call outs for "RAM AIR" on the hood when he bought the car new. Though they should be there.
Not sure on the 71's. Oh, and I really didn't find that comparison funny at all.
! J/K