You can get a hydraulic head and use it with the Amazon bushing tool to make removal and installation of rear subframe bushing easy peasy.

Here a video on an E39 Touring (AKA Station Wagon).

https://www.youtube.com/watch?v=ePSQv-b9nYk

Up, good video, thanks! My issue is that I am being hesitant to pull the trigger on what head/ram. It was suggested to get a "hollow" one. Which I imagine is you would put all thread thru and than have to put a nut on it. The one in your video shows the guy threading the rod into the head. My confusion ensues.....

On the Harbor Freight hydraulic head that I use for replacing press-in bearings, I bought a 3/4" Grade 8 Steel rod (McMaster Carr) that is threaded into the head. It has a limited stroke since it is a chassis punch but like in my wheel bearing video that I referenced I just tightening the nut at the other end and repeat.

Never had to do the subframe bushing but if I did I would have gone with PSB like the guy in this video.

https://www.youtube.com/watch?v=kjeGUrKmJ08

pub
 

I had seen that video and actually looked into those bushings, but they were sold out/back ordered. I just went with regular stock ones. And mine were as bad as in that video! My $50 amazon pusher/puller worked flawlessly. Would be sweet and fast with the hydraulic ram/head. Think I am going to go with the "hollow" ram so that I can just tighten the nut when the stroke has maxed out.