nothing...RSX's were made 2001-2005 for the 2002-2006 model years and then they vanished..2002-2003 were the same car...2004-2006 they changed the body a bit. (hardly noticable unless you happen to like or drive the car..)(they DID re-do the inside of the hatch for 2003-2006 because the back pannels popped off when you shut the hatch...yes I bought the first car sold here in FL and it's hatch pannels popped off, they re-did the pannels 6 mnths after the cars came out.)