I've only viewed one set of 1971 Charger real deal factory installed louvers and noticed that the outer side pieces had the words EXPERIMENTAL molded into the undersides of them. They were removed from the car before the shell was sold and it was at a time back when I didn't have cell phone with a camera on it. lol All I could do was commit it to my memory as my friend sold them very quickly. This was around 1995 and I knew I should have forked over the $175 he wanted for them. GRRR! Has anyone ever seen this on a set before?