Is Sunroof trim available?

[JEM9]

Hi, about to pull the roof trim on 1985 928S (with sun roof) to check front and rear drains for water leak issues. Is the small plastic trim (covered with leather) around the sunroof opening (that helps hold the roof lining? around the sunroof) available to buy? I can't find a part number in the parts listings (maybe it is listed as part of the full roof lining). Does anyone have an alternative part / material. I am sure mine won't last after roof lining removal! Thanks