Best place to utilize the jack

Under the rear diff is great, unless you have a Dart and want to get the rear tire off... Then you want to jack up the body off of the rear axle. My favorite spot in that case is the place where the rear subframe meets the piece of framing in front of the rear spring attachment point. I still remember watching a dude at Carlisle try yo take the rear tire off of his 1970 Dart by jacking up the rear diff... he took off the lug nuts and couldn't get the tire out. I walked up to the car, asked everyone to move away picked up on the rear bumper and the tire just fell off :-)