Head Gaskets, again

Where is the line drawn for using fibre gaskets and steel gaskets when boosting and engine? I am thinking in a pump gas scenario with no water injection or intercooler. I suspect the highest dynamic compression doable in this type of setup would be about 12.4 to 1.

In case you are wondering, I have two sets of gaskets here. Felpro's that compress to .054 and Victor MLS that compress to .039.

Jack