I have a number of ecklers automotion jack pads for sale:
Jack Pad, Fits Porsche 964,996,997,944,968,Boxster,Cayman
Using this solid steel Jack Pad will keep the underpan of your Porsche® smooth and dent free. No more cutting the undercoating and risking rust or corrosion when you use a hydraulic jack to lift the car. These special Jack Pads fit into the jack-ports under each door.{I would think there need to be a bit of grinding!}
See application chart for fitment.
Part #: P911466