Beware of swapping driveaxles from one side to the other.  (If that's
what people are proposing.)  I don't know about Vanagons specifically
but on Quantums the driveshafts LOOK the same size on the left and right
but in actuality one is a little longer than the other.  (Despite the
engine being mounted inline - on transverse mounted VWs one driveshaft
is significantly longer than the other.)

I haven't checked Bentley for the Vanagon but in the Quantum's case
Bentley had the lengths of the shafts listed there - some differed by
mear millimeters.

Just a 'heads up'.

Damian