4500...not bad for some things, but I would count the carbon fiber out for that price...I have invested roughly 3100 into my car to date, and its not even painted yet....
I'm not using 944 brakes, but I do know its easy to convert.
There are a couple of places to get c/f for your car, you'll find all the prices for what you want on these sites:
here ,
here ,
here , and
here
hope that helps...I cant think of much more, Im a little tired