Hey everyone this is my first post to Driftworks! I can't seem to find this information anywhere so hopefully someone can help me out. I am doing a 3SGE Beams Blacktop swap in my Celica and am currently refreshing it, looking at certain parts for this engine is a bit weird because from 10.1998 - 12.1998 and 12.1998 - 05.2001 and 05.2001 - end of Altezza run. Parts are slightly different (ex. fuel injector seals have different part numbers). So my question is how can I tell what year my engine is? And what are the differences between them? Any information helps, thanks!