well that intake has to actually come out first.
you will deffinataly need:
good stage II+ ported heads (MPH, foxlake, vt, etc)
aggressive cams (vt stage II or comp 270's)
longtube headers
good midepipe
Intake mods (plenum/tb at minimum)
not this should get you over 300hp to wheels. if you add the typhoon at it is not a big POS I think you should be able to get in the 320rwhp range.
research the combo though. I would do mph stage 2.5 heads, cams, kooks longtubes, then if the typhoon actually comes out try it. it it increases you rpm range at all it will be wort it. the intake gets a bad rap around here but on a modified engine like this it may raise the rpm range a bit to take advantage of the heads and cams a bit better and give you some upper end hp you can't make on a stock engine.