Yeah the filters are the same. the air charger system or what ever they call it is differant. Oh and if you get the 03 let me be the first to welcome you to the club.
I have the 01 K&N FIPK on my 03 & it's perfect, no prob's. See pic in my sig. Is that price for a new or used one, either way that's insane - run to them fast!