Re: 66-67 Charger Spoiler question - 03/11/1104:21 AM
I believe they came installed from the factory installed but only on a 1966....not a 1967. I found one at a swap meet many years ago (all three parts) and I remember researching it and if I remember correctly this is what I found out.
They came on some '67 Hemi Chargers only, but not all of them. I have never seen any numbers on how many but my guess is a 1/3 of the '67 Hemis had them. If there is one on a '66 it was added as they were also available over the counter.
The originals were aluminum. There was a fiberglass copy made around 25-30 years ago but the way it mounted and the two end pieces were different. A correct repop was made about 5-8 years ago out of aluminum by some one in WA.
I owned a '67 Hemi Charger with a spoiler for 10 years. It was missing the broadcast sheet so I don't know for sure it came with the spoiler. AFAIK, the spoiler doesn't show on fender tags.
Re: 66-67 Charger Spoiler question - 05/15/1106:31 AM
Although not "written in stone"; it looks like the spoiler was an accessory ("over-the-counter" parts dept.) by the end of the '66 model year (July '66) & intended to be STANDARD on '67 HEMI Chargers at the begining of the 1967 model year.