[Perfectlap]

Whenever your airbags are swiped, immediately check Ebay or add the feature that will email you an alert when one shows up on Ebay.
I would email the seller questions like how much is shipping? where are you shipping from? is a local pick up available? How old are the airbags?
Then with that information call the local authorities and email them the correspondence.

Anyone with enough knowledge to believe that Boxster or 996 airbags are worth the risk of getting caught for a possible felony, is smart enough to know about Ebay as a place to fence the stolen items. This isn't some car radio theif looking for a hit of crack or meth.