> I havn't heard of an LSD for a syncro front diff - just locking front diffs,
> solid shaft instead of VC, etc.

A viscous coupling IS an LSD, just using fluid mechanics instead of
solid. Its locking ratio can be altered by changing the fluid
viscosity.

My Porsche trans is LSD... can't wait to try it out, if I ever get a
van on the road.

BUT beware... with an LSD you can still get stuck... just more stuck
than without!

--
Regards
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
Mollusc, Toyota & VW van fan