New Heads/Intake/Cam

[Jason1981]

I am going to order the stage 2 power pack from super six motor sports.
Their website claims "up to 70 HP."
Is this realistic? What gain in HP can I expect at the wheels?
I have a 2004 3.8L Mustang.
The only mods I have done so far is true dual exhaust.
Thanks.

[Kyle]

save a little more and go stage 3

[Jason1981]

I am not going to do any other upgrades than this.
Is the stage 3 power pack recommended for a daily driven car?
My Mustang has an automatic transmission.