Porting is not necessary but will help.
In a NA engine port flow and velocity are important.
In a boosted application port volume and bowl work will help. A 3 angle vavle job will help too.
I myself run unported heads.
As stated above cam timing events pay a big role in boost pressures.
A wide LSA is recommended.
I have run a 108 cam in a 9.5 to 1 CR blower engine. Total mismatch but the overlap kept the combustion chambers cool. I ran 6PSI of unintercooled Roots boost with a 150 shot of N2O.
