I sat down one weekend and made out a kind of "goal sheet" if you will. I decided what I wanted from my mustang (fast street car) and then made a build list of every part I would need to achieve my goal. I'm not going for super fast 8 second car, but a nice 11-12sec weekend driver. My parts list totals $7780 dollar and is about 2 pages long. I work on it little by little as money/time permits and I set small goal so I feel like I've accomplished something on my project.
I went with a PI head swap with a stage 2 comp cam set up including adjustable timing gears, valve springs, throttle body and plentum and Ford Racing 9mm wires and MSD coil packs just becuase. The bottom end is stock.
Thats just the basics I've done to the engine and I'm far from done with the car, but it gives you a point of referance for your question. Sorry I don't have any dyno numbers for you since I'm still working on the car.