I have four 964 calipers which have been modified to fit the 944NA using the stock NA rotor. the set-up allows you to run larger, billet, 4 piston calipers, under 15" wheels. I also have four Late Offset rotors in excellent shape to go with them.
Includes a set of Hawk DTC60/70 pads with 80%+ life left too.
$450+UPS
And don't think about saying they rotors are not big enough for the calipers etc. because it works fine. This set-up has never overheated or had fade and one a National Championship.