One more bit of info I hope is correct.
I am told Crutchfield has a wire harness adaptor to install a DIN mount XM or Sirius radio in a Boxster or 996.
A direct plug-in (?????).
This replaces the Porsche CDR 220 or whatever you have or have not.
I have not, as this was a salvage car & the radio was missing.
It looks like I will go this route.
I will let you all know how it works.
Len
Smile, you own a Porsche and there is NO substitute.