I'm working on bringing my '03 up to Stage 1 status. I don't have a picture handy, but I'm wondering if my intake is already a stage 1. Is there a defining feature of the end cap? Mine has a K&N filter in it, and the end cap has a bunch of holes in it. The parts diagram, and a few pictures I've found, show no holes in the cap. Do I have a stage 1 air box?