You know, depending on how much it is going to cost, you might just want to buy a trunklid that doesn't have a spoiler, then have it painted. Then you can either keep, or sell the lid with the wing on it. I know with my car, it is usually cheaper to find one and paint it.
Actually, my car is so common that on my first bird, when I had to replace the front bumper, I got one from the Pick-N-Pull and it ended up being the same color! That is always a nice thing.
~Chuck