AP1 2000-2001 2.0L, plastic rear window
AP1 2002-2003 2.0L, glass rear window
AP2 2004-2007 2.2L, glass rear window, updated mirrors/bumpers, updated interior and suspension (no snap oversteer), new transmission with stronger synchros in 2nd and 3rd, shorter gears 1-4, longer gears 5-6, 17" wheels over the AP1's 16"s
I bought a 2003 because I wanted the 9000rpm redline and the twitchier suspension- plus it's what was available to me. You can get a control arm kit for not too much that will fix the snap oversteer problem on an AP1.