Porsche factory standard drilled and vented discs and brake-pads fitted on all 4 corners.
Front double vented Discs, pads, Bilstein B12 dual action shock with 25% uprated spring.
New 30% stiffer springs and dual action Bilstein Gas Shocks, giving better road handling.
Discs can run-out of true due to sudden extremes in heat. You simply replace any warped discs.
Mercedes Bosch Independant cyclinder coil packs. No.6 coil pack very high resistance. (Failed)
Valve stem guides showing signs of wear with excessive oil contamination on some of the valves.