According to the catalog, there's a production date split during March of
2004. Depending on when your son's car was produced, there will be some
sort of difference. I don't think it's significant, though. The block
and heads are the same.
Recheck your work and proceed with normal diagnosis.
Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai /
More information at http://www.talkaboutautos.com/faq.html