Mazda_sp20. I assumed that you were right and that the air boxes were the same but when I looked at the ones I had they were different! My wife's 02 P5 had two loops and pegs on the side and an aligning tab on the back of the box. My MSP had three loops and pegs on the side and no aligning tab on the back. I have no idea why Mazda would make such small changes! I guess that makes a real MSP air box a 'rare' item lol.