If you have the original jack, the proper location for that car would be behind the front tires...look under the car...behind the front tires and you will see a pinch weld hanging down...it runs the length of the distance between the tires (front to back)...well if you carefully you will see where (approx) 5 inches of that pinch weld hangs a little bit lower than the rest. That is where you put the ORIGINAL jack. The original jack has a slot for that pinch weld to fit into.
If you have a floor jack I would jack it up right underneath the engine cradle. Right where the cradle frame bolts go into the bottom of the car. As-in placing the jack right beneath one of the cradle to car bolts and lift the car at that point. I would only try to do ine side of the brakes at a time and I would NOT try to lift the car (in this method) high enough to fit a jack stand underneath it. Id lift the car barely enough to pull the tire off and change the pads one pair at a time. I'd leave the car on the jack, but that's just because I wouldnt be getting underneath the car and changing pads in that kind of car is a 20 minute job. Tops...