I don't want to thread jack but I have been thinking about that for my 99 as well. Since they have different holes as the 01 I was wondering if that would work too without redrilling. I bet yours will because all the wings seem to fit the 01 stock holes but who am I to say On the 99/01 deck lid anyone?
Assuming you are referring to the s 281 spoilers there are two styles. The 99-00 version and the 01-04 version. Each correspond to the stock hole location for the stock spoiler.