I would take off both heads and have them milled slightly to make sure they are true and not warped, then I would use good old trusted Felpro gaskets. The milling will also get your compression closer to the 10:1 you are looking for.
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59 T-Bird (elegant old lady)
67 Olds 88 coupe (425 big block)
68 Fastback (work in progress)
70 Mustang convert (wonderful sunny day driver)
72 Mach One (Greenwich Concours 1st place winner)
95 Vette convert LT1 (faster then my ability to drive it)
VMFTP 2.0 Question #19 Winner! (sort of) 
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