Wolfgang from Munich wrote in the German VW-Bus Forum:
(http://f1.parsimony.net/forum165/messages/10654.htm)

     Several times there was a discussion in the VW-Bus
     Forum how to strengthen the Vanagon gearbox. It will
     be interesting, if someone could some information
     about modification which are available in South Africa.
     This are parts number for additional parts used at
     the South African gearbox:

     22S 301 202 OIL SPLASH PLATE / DIFF PLATE NYLON
     22S 301 222 OIL SPLASH PLATE / 5. GEAR NYLON

     22S 301 204 OIL SPLASH PLATE ???

     2 times 22S 301 319 BUSH PROTECTION SPLASH PLATE
     2 times 22S 301 103 w/o description

     The first and second part redirects the oil to the
     differential plate and to the 5th gearing. You
     may remodel them with some aluminum plates, but
     it will be interesting to get them as originals.
     Price will be only a few Dollars. But you may need
     the South African housing to mount them, this could
     be to expensive.
     (Harald already replied, that only four holes have
     to be drilled, four threads have to be made and a
     minor case modification to be made on the European
     5 speed box)

     If you need to get the other 5 parts isn't clear
     right now.

     Additionally, the South African gearbox got a strut
     beside the bellhousing. Part number is:

     22S 300 107 STIFFING STRUT (N.L.A.)
     and
     22S 300 107 A STIFFING STRUT

     I don't know details. What does N.L.A means?
     Not Longer Available ???

     But it is a iron made strut, can't be expensive.
     For Syncros the strut is useless because of the
     fueltank. The bellhousings part number is:

     BCY 301 107A CLUTCH HOUSING 5 Cylinder

     We're investigating, if we could purchase this parts
     and the pricing of them.

Helmut
'80 Vanagaudi