intakes don't really add much "power", even when tuned. you just need to make sure the legnth is long enough s o the intakes will be sucking colder air (aka closer to grille)
Look at the stillen gen 3 to see what it takes to make that much power. Would be fun to see those on an FX.
I think that real nombers of power will be only after installation intake + Exhaust System + Hi-Flow Catalytic Converters.
agressive sound will be only with cone filters like K&N, i think "mushrooms" of Top Secret won't make this sound.