Which surroung are you talking about and what black plastic piece are you refering to? Are you wanting the grey dash part or just the bezel that goes in front of the speedo? And is the black piece your refering to the bezel that goes in front of the speedo or is it the black plastic that the speedo mounts into? Im guessing since you want the twilight sentinel and defoger you need a bezel. You can get any bezel that doesnt have a twilight or a defoger opening and take the removable plastic insert out of the bezel(underneath the plastic that has the options all bezels are the same) and get a reproduction bezel insert from kirban that has what ever you wnat on it.