Originally Posted by shizzle
I looked into it when I was thinking about a GT3 too. The Brembo retrofit kit comes with new iron rotors that can be directly swapped out far the carbon ones, and Pagid makes regular Yellow pads that can be used in the PCCB calipers. The whole kit costs about $2800USD last time I checked.
As for selling the PCCB, just keep 'em around and sell them to someone who destroys theirs' on the track (if you read rennlist, it doesn't seem to be an uncommon thing).
It's not common to destroy the PCCB's as long as you replace the pads frequently once the pad wear reaches approx. 30%. That being said it is not an issue on the street, but merely for heavy track use.