Need some info on intake gaskets

Cork seals fine in a fixed gasket spot like that. All lot of whether they will fit well is if the the head and block have seen a lot of machining.

One thing, is that the AirGap will not have holes in the intake's front and rear end rails like a stock intake will have to line up with roll pins in the block's china rails (used for intake alignment). Those pins have to be pulled out or some matching holes recessed in the intake's end rails.