Does Quaife make a limited slip diff for the Vanagon tranny?  Does anyone
else?

This seems like much more cost effective way of getting traction than
putting an entire $yncro tranny in you Vanny (Ha! I made a funny! Tranny -
Vanny... get it?).  Then, if don't already own a tall-sitting '85, you can
purchase those limited-run $400 springs that will raise you ride height and
you have a respectable off-road vehicle.

I've been off-road in my '85 several times and enjoyed it.   As long as the
ground is dry...

Chris