RZR heads question

OK, i had to buy a head for my 2011 800 (50′)
I purchased one from ebay that has 30 hrs on it. Its a 2013 head. looking at different parts house diagrams it shows the same part #s for the head casting and gaskets. But looking at different sites I see parts working on 2009-2012. 2013 have different gasket listings. Did I screw up getting a 2013 head for my 2011?