Hey guys. Just need a refresher on what fits what. 96 to 98 : pipes are the same (O-rings on the outside of the flange) 99 : Runs O-rings on the inside of the flange 2000 to 2001 : Flange changed size but still ran o-rings on the inside of the flange? 2002 to 2004 : ?? Correct? I have a 99. Just checking if I can use any later model pipes on the bike.