Can i use a ported cobra intake for a 400-500hp application?

well i'm doing afr 185s, custom cam and i want low to mid/high power....lol i want power all around but we cant have that can we?
but if i port both upper AND lower i am thinking that it will be sufficient.
 
It is definitely attainable, though you would be closer to the 400hp mark with that intake (even if it is fully ported). I have a friend that ran one on his 306 with gutted victor jr.'s and an F cam. He made over 400hp at the crank na. Once he gave in to my pestering and changed his intake, he gained quite a bit of power. Obviously, any cam and heads that flow the kind of CFM needed to attain your goal in na form will be hindered by a ported cobra. This is true for both boosted and na combos.