I had an SS in H.S. and it was only 6 years old so most of the stuff was original. The kick panel had grey sealer but there was black on the door shields. I just wondered if there was a specific kind for certain areas or if they just used both or whatever was available. I know there is a lot that we know about the assembly process, but some of these little details are scarce it seems. I would like to know what people that restore cars use for a reference to get all these details.