My machinist turned me off from those gaskets, said they are almost too hard to work well. I'm running an honest 9.7-1 with 5psi of boost and Felpro recommended the 1021 Boss 302 gasket or a wirelock setup for that much pressure. The 1021 isn't scallopped like the 1011's on the exhaust side of the head and should hold better, plus the fire ring is stronger and they allow for oversized valves. They were about $70 a piece.
Oh yeah, felpro started putting tabs on the front of the gaskets that stick out from the head so you can tell if they are on right even with the motor in the car and running.
Jamie