please help! installing air intake in 1999-9-3
 

I just got a 1999 9-3 turbo convertible. I dont know much about cars but i do know i love the saabs and i love mine. I just want to do a few mods. i just put a bov on and now im looking to change the stock air intake to a aftermarket. not exactly sure how to do it or what brand to use. I have heard some things bad about it messing up the way your car runs or maybe thats just the k & n brand. any help would be appreciated, pics if possible of how to take out stock box and install new aftermarket one.