Jeff,
The seal between the tranny and final drive is just a thin paper
thing... 5 bucks at the dealer. If you're thinking about
replacing/rebuilding (good idea), I recommend Weddle Engineering out of
California. About $750 plus shipping and core charge and they'll hook you
right up....even give you the silly paper seal. Here's their info:
Information and Orders: ( 805 ) 696-9665
Fax: (805) 696-9667
P.O. Box 1075 - Goleta, CA 93116
mailto:info@2weddle.com
Scott De Santi
86 Vanagon 2WD (The Wobbly Bus)
Anchorage, Alaska