Head gasket help!

I have a pair of Fel-Pro 1011-1 head gaskets and a pair of OE Ford / Ford Racing graphite head gaskets. Which one should I use on my '91 5.0 block with SVO GT40 Y303 heads?

This thread tells the difference between the two Fel-Pro gaskets. It appears that I have the wrong ones. Is there any advantage to the graphite ones? I will be using ARP non-undercut head studs. Thanks!
 
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