Key operated passenger airbag deactivation for 987 ?

[northern986]

Hi,
Does any 987 owners here have the Porsche Tequipment "Child-seat fastener system" (Part no. 997 044 800 13) installed?
It includes the fastening loops lower anchorage points for mounting between the seat surface and backrest, as well as a key switch for deactivation of the passenger airbag. For reference, here are description and photos (page 36-37) http://www.porsche.com/all/media/flash/tequipment/987/catalogue/en/index.htm#/36/

If so, which Porsche dealer did the installation?

I have checked with 4 different dealers already and none of them is willing to offer this service, despite the system being a Porsche Tequipment instead of aftermarket.

Thanks!