67 dart stroker hellcat gen3 hemi with twin turbos...

After market heads are how they are making higher boost. Otherwise o ring the block and heads. Even that isn't fool proof. The stock heads have limits before they lift. As the decks just wont support the cylinder pressures without distorting or lifting. The orings help a bit but only so much. Withthe new tytech heads they Re of better material and much thicker decks. They will with stand the power and pressure with ease. They also flow a ton of air and cost the similar as replacement stockers do.

Head gasket failures are tuning errors or head seal failure from weak casting.

I'm hoping I won't have to see 30psi but it is likely I will.