Saw this one on our favorite night time net channel.
http://cgi.ebay.com/ebaymotors/1969-69-Camaro-Cars-Parts-NOS-ORIG-Entire-Stock_W0QQcmdZViewItemQQcategoryZ10076QQihZ002QQit emZ4647910705QQrdZ1
Not sure if this is the right place or not feel free to move if needed....but I thought it interesting..........The old story the original owner said....

8 Ball

One of my cars is a 69 RSSS 396 375HP and sadly it has the same roof. Do a search on ASC (american sunroof corp) and you can read the story. Chevys were sent out to ASC while Mercury (800 Cougars I think) and others allowed them into the "factory". These are quite rare but not "factory". My car still has it but most likely I will replace the roof. Very high quality German units with Bosch componets.