I'm thinking of getting those generic mufflers that you can get on ebay for like $60..it's got like HKS badge on it.lol. dont think it's HKS though. Well, do you rekn it's dumb getting one? i dont want my car to lose power and noise wise....lets just hope that my neighbours wont start complaining. I was thinking of getting an air filter fitted in but the guy at auto barn told me if i wanted one....i can't just get any type...(i was thinking of getting k&n) apparently, for corollas, there's a electrical unit thing mounted on the airbox...and we have to get those air filter that can acommodate that. Does anyone know where i can get k&n air filters?? That guy said it'll cost me $400 to get the Blitz air filter....way outta my budget....