For some reason, I'm not getting email notifications when a reply comes in.
At any rate, glad to know about putting the car down, or wheels up to ride height when putting final torque on anything with rubber bushings. I did find a subframe mount press kit that isn't too expensive.
As far as working underneath, I have some wheel cribbing that I made when I replaced the rear brake lines a couple of years ago. The line that runs from the front to the rear had rusted and started leaking, so I made a new line out of copper-nickel and replaced the flex lines with new stainless braided. Fortunately, I noticed the leak before it actually let go!
The pic below just shows 3 layers of cribbing, but I have enough to put the entire vehicle up on 4 layers if necessary.