Rear suspension enquiry ?

[Karl Kurz <kkurz@acad.umm.maine.edu>]

My 1986 4000 quattro is settling by the stern and I need to raise it to 
achieve greater ride height. I suspect that the springs are becoming 
soft, and shocks as well.

Can anyone advise a direction to replacement parts or methods to get the 
body up, even a little higher than original would be fine. I find myself 
at times trying to get to my camp through unplowed gravel roads and 
really need more clearance.

Thanks in advance, Karl