pplusent

Hi, does anyone know the minimum requirement for the squelch area between the cylinder head and the piston deck. My pistons extend .020 above the deck so I am trying to find this info so I can get the correct head gasket thickness. Also does anyone know a good composite head gasket for the 3.0 12 valve engine that will hold up well? I have ruled out the MLS gaskets.
Has anyone tried the Victor with nitro seal?
Any info would be a help
Thanks