I always enjoy Muscle Car Review when it arrives over here, although there's a fair delay in receiving the latest issue due to surface mail.
Anyway, I was just reading about the unrestored Olympic Gold Z/28 in the July 2015 issue. The article states that when the car was uncovered, the open-element air cleaner was devoid of decals. "Not all of the cars had decals" said (Michael) Lightbourn.
I understand that Michael Lightbourn is a well-known hunter of rare and collectible cars from El Paso TX, and acquired this car a few years after the original owner passed away.
This comment about some cars not receiving air cleaner decals is not something I have come across before, and I thought I would ask if anyone else had heard of it, rather than just dismiss it as incorrect (with no disrespect to Mr Lightbourn).