i think that all the bits that sk has mentioned are more than enough to get you into the time bracket i think that the main thing that i would be worried about would not be how cheap an affair its going to be but more how reliable its going to be and how much is it going to cost me in the long run.
also it is important to remember that the stagea is one heavy mofo and therefore if you are considering any sort of power upgrades over and above what they come with stock then braking and suspension and handling also need to be considered at the same time if not before you start hunting for power, after all whats the point of a fast car if you cant stop or turn??
my 2c