ION sunroof question

I've got a Subaru Legacy with a sunroof that opens both up, and down and back. When the sunroof slides down and back, a spoiler pops up that prevents the car from becoming a hemholtz resonator (take a soda bottle and blow over the top of it to make it hum).

My best friend has a 2005 Saturn ION and wants the same type of spoiler, and not a rain guard/wind guard like it came with. Is it possible to get a spoiler kit for the sunroof?