Maybe
from:
https://www.pelicanparts.com/techarticles/Boxster_Tech/90-ELEC-996_Cluster/90-ELEC-996_Cluster.htm
Boxster guru Todd Holyoak has developed the following programming system for updating the gauge cluster in the Boxster:
Connect the PST2 or PIWIS tester and select model 996 and the DME module
The only option available to you will be to reprogram the DME
Reprogram the DME using the immobilizer and DME programming codes. Use the codes that you received from your dealer, and enter the same values for the old and new codes when the PST2 requests them.
After programming, enter the vehicle data tab
Recode the model type to 911 C2 cab , use 911310 for North America, or 911311 for Rest Of World (ROW)
Back out to the original screen and perform a complete control module search
Enter the instrument cluster tab, and change any coding you would like (cruise control, On Board Computer, cabriolet set, etc)
Exit back to the original screen
Recode back to your original 986 type using the current DME and immobilizer codes you used previously.
This procedure should allow you to change all of the settings in the 996 cluster to work with your Boxster. If for some reason you are not able to get this procedure to work, another solution is to install the gauge cluster into an existing 996 car and then reprogram it there. Of course, it's pretty difficult to find someone willing to let their 996's dashboard be taken apart for this purpose.