The 67 cars had the clips you ask about. These clips were deleted sometime in 68' so early cars may still have them. There is a hole in the turn signal housing just to the right of each bulb socket. This hole is for a screw to be installed if you had the clip, which is just a sheet metal, almost spring steel, flat holder which has a cresent shape cutout to hold the light socket in. During MCA judging, if the hole has threads and the clip is not there, you will lose points. I have not seen these clips repopped but I haven't been looking either. Ron, (Clubpro) do you know? Sorry, I don't have a pic. Mike