If we are talking about the same things, and it's a 96 RT, they are MS73RX8 (l) and MS72RX8 (r). Right is still available from parts folks...left is not. On back order for who knows how long.
I am referring to the parts that are inside the door jamb where the seat belt anchor comes through to mate with the door jam. It's a "closeout panel".
I called Paul Scharf this week...at least for a 96...no gots.