Originally Posted by 575rider
If you know of a body shop that works on a lot of STI's, you could probably pick up a STI splitter for well under $100. I don't remember exactly what I paid for mine, it was so long ago, but it was somewhere around $25-40. I had to trim it a little to fit under the smaller scoop.
The 06/07 WRX has the exact same scoop as the 06/07 STI so no modification to the splitter is necessary.