in the new issue of European car is this ad:

CV Express offers same-day shipping of constant-velocity components at
manufacturer-direct prices.  CV Express stocks a complete list of OE-quality
constant-velocity products for Volkswagen, Porsche, BMW, Honda and many
other manufacturers.  Place your order by 4:00 p.m. EST Monday-Friday, and
CV Express will ship it the same day.  New full assemblies or joint and boot
service kits are available.

For further information, contact:
Driveshaft Technology, Inc.        (800) 458-4418
30369 Beck Road,  Dept. EC
Wixom, MI  48393
..........................................................................
and, since you guys would never get around to calling :) --

he says that YES the 68-79 Bus cv joints ARE the same as 80-91 Vanagon joints.
(except for syncros).

part number P7638 (cv joint and boot). 1-10 units: $83.70 each.
(he says he has plenty in stock)       > 11 units:  58.55 each. (so if three
                                       of you can get together, saves money)

now, the Bad News:
part number P7734 (Syncro Front cv joint and boot). 1-10 units: $255.30 each.
                                                    > 11 units:  167.50 each.
ouch!!

joel