So currently I have 3 AO wheels and 1 YA wheel on the car and a standard 14x7 spare. I found a matching date AO wheel to get me back to 4 matching... and I was thinking of using the YA as a spare. I thought YA wheels were '69 wheels? Build sheet says AO. But doesn't tell you 5 AO.YA or AO SS wheel depending on build date. No trim ring or center cap.