how to flip quad shocks?

I've seen tons of posts on flipping quad shocks, but none on how to do it

Is it just a remove bolts, turn upside down, bolt in affair? should the car be jacked up by the body with the axle hanging to do this? or can it be done with the car on the ground?

also, on an unrelated note, I'm getting a set of maximum motorsports full length subframes installed in a couple days. once they are installed, will I be able to use the subframes as a jacking point, or will I risk damaging the subframes/car?

Thanks