Head gaskets

Have the Stealth surfaced as everyone I ever used wasn't flat. Then just use the .039" thick 8519PT1 FelPro head gasket. I used those on my 11:1 compression, 91 octane, pump gas, 451 Edelbrock RPM headed stroker to 770+ horsepower. The 8519PT1 has a a bigger bore diameter (4.505" to 4.410") than the 1009 and the smaller 1009 has in the past protruded into the Stealth combustion chamber.

And besides, you can almost buy three 8519PT1 head gaskets for the price of one 1009.