I would not jack up a car with independent rear suspension by the differential. Unlike rigid rear suspensions the differential is not attached to stuff that primarally supports the weight of the car. All the differential has to support is itself. I jack up the back of mine from as close as I can get to the side jack lift points. I think there's a rubber thing there that fits into the top of my jack.
[Edited by Jim Anderson on 06-29-2001 at 02:03 PM]