The tools on my 928 are located in the back of the car behind a cover in the rear deck. There are 2 knobs that hold the cover on, they are rotated to release the cover. The tools include open end wrenches, screw driver, pliers, spark plug wrench, lug wrench, tow hook (fits in hole by the rear license plate), and an orange case with spare light bulbs.
Cover release knob
With cover off
Copyright 1999, George A Suennen