Zedder, does the trim ring card you referred to look like
this?
I found this in a box of old stuff i bought, and noticed the date was 9-23-66, which is just about the time the rally wheels were first introduced... not sure if there was a revised edition to this card later on, or if they were all printed with the 1966 date on the bottom... I have another original somewhere that i know came out of a 69 Camaro, but i can't find it right now to compare.