> Is this stainless exhaust system available for the air-cooled vanagons?

Not exactly. It's available in a European spec system, which does not allow
the use of a cat converter or egr filter. Not street-legal in the US (since
no cat), although some people do run it depending on the local enforcement
of their emissions laws.  This system runs under $200 complete.

- Ron Salmon
  The Bus Depot, Inc.
  www.busdepot.com
  (215) 234-VWVW