K&N filter for 99 malibu

hey guys
i have a 99 malibu with a 2.4L grand am engine in it. i am wanting to get an aftermarket round K&N air filter (not a replacement filter) so i can get a little better gas mileage, but i don't know what to look for since it is a different engine. also, what are the pipes called that attach the air filter to the throttle body? if someone could give me a link to a K&N filter that would fit, that would be awesome!
thanks

check on ebay