I just removed a set of head gaskets out of my turbo charged y-block with about 1,500 miles on them under 8-10 lbs of boost and they showed no signs of leaking at all.  On the other hand I do torque them down to much more than the torque spec.  I am running ARP head studs and would highly recommend them especially for long term.  They will not stretch and that way when you torque them down you are pulling down on the head and not pulling up on the threads in the head.  Plus the top threads are fine so you have more clamping force.  Hope this engine runs great for you.

Yo Hutz, what kind of head gaskets were you running?

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Billerica, MA

Sorry I meant to tell you I am using fel-pro.  They have been working great.