Re: Can I jack this thing up by the diff/crossmenber ?
The front crossmember is probably stout enough to handle the weight without twisting or misaligning anything. The rear has no central jack point to speak of.
Personally, I will stick with jacking up one of the front sides first (front jack point), use a stand, and then jack the other side. It's just safer and this car is more than stiff enough to handle the torsion.