I mean let's explore ..lol.. ever seen an engine with so much Blow by that it could blow out an intake gasket like that..with a working PCV..and passing smog with flying colors...and not blowing out the pan gasket front or rear seal if anything. Plugs look great, I scoped the bores with camera even...looks great and you see hatch still at 318k
It's got to have something to do with that massive Aluminum Intake and a specific gasket material needed. But I'm no expert.. only at trying to avoid this happening again do I want to try and be.