I'm going through something similar...
You can start your search here
I am pretty sure if you go through the oem catalog on that site you can purchase the skirts for around $175 per side. Good luck
BTW, I think I've seen you up around Rock Glenn Road, My family has a house up off of Tomhickon/Timbicker Rd. I would have been driving my wife's black 06 wrx wagon.