Mine is still intact. I lost mine on an '85 BMW 7-series that stayed in the family for 20 years, and had to replace it. It made an enormous difference to the amount of engine noise in the cabin, to my surprise.
Still have mine. It's gotten really dirty from when I took it to Rausch Creek back in November, but it's still in one piece. I bet once you throw any type of engine cleaner on there to clean it off (what I did) that it'll start to discintigrate (sp?). Good thing I've only used that cleaner once.
Just curious...you mean yours is fine, or yours wasn't built with it? BTW, I looked up the part for mine ($151), and it IS a 99-02 piece. Of course, '96-'98 might have had a different one.
EDIT: NVM, I gather from ClemsonFan's post that '98- doesn't have them.