Does anyone know if there are oil pan upgrades for the 2.0L Elantra and if so who makes them.

 

No, there are none.

Please define "upgrade" and explain why you would need a "upgraded" oil pan.

 

Yeah unless you are a serious auto-xer you really have no need for a better oil pan. benefits would include increased capacity, better scavanging, and better crank windage. But like I said these benefits are only marginal and even then only for a racer.