>I've looked into this and you have 2 (and a half) options:
>
>1.) Find a limited slip ZF - you can only get these used and they
>are hard to find and pricey.
>
>2.) Install a locking differential from a synchro. A little less pricey.
>
>3.) Get enough people together to convince Quaife to make a
>torque-biasing diferential for the Vanagon.

4) Fit a LSD Porsche trans as I'm doing... I'll be trippin' with my
LSD... no acid replies, please.

HOWEVER an LSD trans is not insurance against getting stuck... as
I've found with 4x4 Mitsubishi vans (jpeg available). LSD will help,
but it ain't on its own the answer.
--
Andrew Grebneff
165 Evans St, Dunedin 9001, New Zealand
<andrew.grebneff@stonebow.otago.ac.nz>
Seashell, Macintosh, VW/Toyota van nut
Friends don't let friends do Windows