i have a complete floor vent setup from a diesel vanagon.  would work  on
ANY manual trans vanagon.  i was going to put this in my own van but my  van
is an automatic so it wont work.

basically this is a factory duct that channels heated or fresh air
(whichever you choose) to the passengers via the walkthru. installs in less than  5
minutes.. no cutting,  install it right over your carpet.    this style of
heater ducting was used in diesel vanagons before they started  using the
rear heater core.  it was also used in transporters.

anyway it includes the floor duct (black) heater diffused dash piece, shift
 boot and bezel (theyre different) and vent cover where it exits into the
rear.   its all there, even the fastners.   this literally  installs in less
than 5 minutes, and is a nice way to channel more hot air into  the back.
fits westys, and any passenger vans too..as long as theyre  a manual
transmission..

p-mail me off list for more info