A guy who works at my local NAPA owns a black '02 SS with the surf board spoiler stock from the factory. And I was looking at pics of an '03 LS with pace car spoiler on the net last night. I know there was a high end appearence package offered for the LS models that included the pace car spoiler.

And I've seen many '00 & up SS Montes with the surf board spoiler on them.

So it looks like you could have it either way you wanted or the check book would support.