I could be wrong but I think the 02-03s are the same as all the pre-02s.
In 04 the shape changed but I'm not sure the hole in the hood changed. I'm going to find out as soon as it stops raining. I have Nailman's old 05 hood scoop (via Impreza05) and I'm going to compare it to my 97 OBS scoop and scoop hole.