Rear brake caliper spacer for 350mm rotor.
The rear brakes in 996 and 997 models using 330mm rear rotors are easy to upgrade into similar to 997 Turbo. You will just need this adapter set and a pair of 350mm rotors.
Reference code for the brake rotors: 997-352-405-02 and 997-352-406-02.
Porsche 996 C4S / Turbo
Porsche 997 Carrera S / C4S