[Auf los!]

Wow, what a project! You can't be doing it simply to get a glovebox, are you?

Anyway, I don't know the answer to your question, but I know what I would do to try to find someone who has done this swap...I would google for pics of "boxster dashboard," and when I see a pic of a dash all torn apart, look at the page that the pic came from. You might be lucky and find someone who's done the swap and can still be contacted.

Good luck!