Sure, you can pump 10psi for a while. It's not built for that and inturn destroys the engine. It's why the supercharging kit for our car only runs 7psi.
Maybe these engines can handle more. I have heard the opposite. And have seen many 6g engines(3.5 and 3.8) blow up from too much boost.
Might as well go forged anyway. I wouldn't go turbo without it.