[steved0x]

This thread has more details:
http://986forum.com/forums/general-discussions/46411-ignition-switch-replacement-holy-crap.html

The ebay auction where we got them from has sold out:
Audi Porsche Volkswagen New Ignition Switch 4A0905849B | eBay

But there are several other places that have them, here is one:
Porsche Boxster 911 Volkswagen Audi Ignition Switch | eBay