CAN (Controller Area Network)
https://en.wikipedia.org/wiki/CAN_bus
MOST (Media Oriented Systems Transport)
https://en.wikipedia.org/wiki/MOST_Bus
Just google for "can bus adapter porsche" and "most bus adapter porsche".
Over here in Germany DIETZ –
PORSCHE - Audiotechnik Dietz - Online Shop – is a well known manufacturer for those adapters. Don't know if they are available in the US. So maybe someone from the US can help out here more than me.
Regards, Markus