Sorry, I didn't read through all 12 pages. This is what I had found out when I was researching what looked to be an incorrect window in my 1968. I was a noobie at the time and still am compared to most on this board. My drivers window at a (astro air) logo on it. I thought this was for Camaros only so I checked into it. They stopped making the astro air window in early 68 due to concerns of it being in the way of the side mirror. It might interfere with what you could see in the mirror. They also stopped putting the silver/aluminum wiper arms and went to black with the concern of glare going into the drivers eyes. I'm not sure if this will help or if it has already been mentioned.