the list of changes is quite large mate........
if you tell me what the 10 th digit of your frame number is it will tell you what year your bike is ! what bits you looking for ??
the main difference is the back end! The seat unit on a 03 is much slimmer and the rear lights are exposed the 02 has a cover shrouding them!! have you a picture of your bike i might be able to help?? o
griff