Corey, I may as well chime in here too,
That looks REALLY good. It looks like a mini stock scoop! congrats!
Jhuang, I don't think water getting in there will damage anything, theres nothing in that area anyways. Corey if you do put a filter, just put a ractive heat shield filterand water won't even touch the filter element.
You can see my custome intake with a heat shield filter in the members section