1)Front crossmember under the engine. Use a 1/2" thick block.
2)Rear at the bolt on the front attach point of the rear suspension member(it's dished and is perfect for a hudraulic floor jack wiythout a block).

I use ramps under the car in case things fall. They are WIDE and will not tip over.

-mark

 

I use the front cross member, and place the jack stands between the control arms and the cross member. On the rear I use the diff housing to jack up the car, and then use jack stands on the outer trailing arm location on the cross member.