Did you get GM factory head gaskets? If not, you can get Felpro. I found out last night that the Felpro head gaskets are the same damn thing as the GM ones. Buy either one--whichever has the lower price--because they are the same.
As for the head stud torque procedure, I would apply 30 wt. oil to the head studs and then torque them down to whatever ARP says. The procedure is shown below...
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