With the stock intake, no intercooler, and if you stick with ported E7's, and the stock cam with 1.7's, I'm betting you might see 290rwhp at most.
If you dropped out the 1.7's, and the porting, you'd be looking at about 255-265rwhp.
On a stock engine, 1psi is worth about 10hp. I'm not trying to burst your bubble, but that stock intake is like running a choke on the combo. Skip the GT-40p's, port the crap out of the E7's, get a Cobra intake and you'll probably see close to 300rwhp. Either that, or you could go intercooled, and raise the boost up a little more and really make some gains.
I'm not a forced induction expert, but 350rwhp? No way in hell without an intercooler.
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