This was an installation done by a Porsche customer on his 2007 Porsche Cayman S.  The short shifter kit fits on all Porsche 996, 997, 986, and 987 cars.  The pictures show the process on his Cayman.  Similar process for 997.  996 slight differs for removal of the center console.  Shifter assembly is the same.  You can view the product here – https://www.agencypower.com/catalog/agency-power-billet-short-shifter-porsche-boxster-996-997-p-33948.html

Pop shift pattern cap off of shifter at the point indicated.  There is an indent provided to slip sharp tool in to release cap as shown.

Some models have a set screw to remove.

Remove shift knob as pictured.  Some models require leather shift boot be lifted up and shifter collar be turned 90 degrees clockwise to release(see below)

Remove leather shift boot after knob removal

Remove side vents to access front console screws that need to be removed.

Remove center console mounting screws as shown.

Remove parts attached to console as shown to allow console to be removed later in this process.

Remove rear console mounting screws located underneath rubber mat.

Remove ash tray and mounting screws beneath it.  Make sure to disconnect any electrical connections so console can be lifted out freely.

Make sure all electrical connections are safely disconnected to allow console to be removed.

Before disconnecting shift linkages from shift console, mark thread locations for easier adjustment upon reassembly later.

Remove bolts holding shift console down and remove shift cables from unit so it can be lifted out freely.

Once console and shift mechanism is out of vehicle, remove plastic collars to remove shift lever from mount.  Disconnect any linkages from lever during this time as well.

Install new lever into shift mechanism, re attach all linkages, shift cables, and make sure cables are adjusted so that lever goes into all gears freely with no issues.  Reinstall console and all electrical connections in reverse order of removal after shifter operation has been verified.