I'm only going by memory here so bear with me. I am under the impression that the original engine decals that went on the air cleaner tops circa 1960's and early 1970's, that had the engine cid, turbo fire for small blocks, turbo jet for big blocks, and the horsepower, had the adhesive on the back of a thin piece of cardboard something like the thickness of one side of a manila folder. On the top of the cardboard was a silver foil with the info in red. Does this sound correct? It seems all new repos are just mylar with the lettering on the top and adhesive on the back but no cardboard in between. Does anyone know where I might be able to get an original decal or a repo one with the thin cardboard in between? I need one for a 1969 Z/28. Thank you.