Did you add the SS trim into the Caprice after removing the front dash closeout? If you need to close out the sides now then this pair is perfect for you.
The full replacement portion comes in 2 pieces but adds all the clip holes that the SS has for a full drop in swap piece for the SS interior.
Second picture is shown over what it replaces if you have the chrome appliques. The cutouts in the PPV dash were hand cut at the factory using a fixture so there may be some small variations between your dash and these parts. They have been designed to accommodate for as much variation as possible, but you may have to massage your dash or this part when gluing them in.