70GMC

That's close, but I have seen those on the '73 and newer models before. Mine is a '72 and the "Opera Window" is an oval shape. I have looked all over the Internet and have not found another 67 - 72 with these windows.

Just bought a 72 Cutlass Supreme with "Opera Windows". Was this a rare option? I am also looking to learn more about this car. Any help, hints, advice, etc.. always appreciated. I have always been a truck guy, but the wife wanted this Cutlass, so.....