is it possible to do the rear differential bushings replacement one at a time so you dont need extra tools/hand to hold it up?

 

Exactly which bushings are you talking about? The mustache bar or the diff chassis mounts? Or both?



One of the bolts on the mustache bar is "backwards" from the factory, meaning you can't to get it without dropping the rear subframe. I did mine this winter and it was surprisingly easy, even for a first timer. I don't see any way you could get the bushings out on the car. It would just be making this way harder than it needs to be. And to answer your question, I'm going to say it's impossible. There are some write ups on here on how to do this. You can do it.