Who pulls the engine just to swap mounts? I jacked mine up from the bottom to change them one at a time. Did the driver side first and left the drinker side bolted down so the engine would roll over a little, giving a hair more working room.
1000%!
One side at a time. Leave the side you are not removing loose, but do not remove the bolt or nut completely.
As
@iamdub mentions, doing so will allow the engine to stay lined up while allowing it to lift and roll a enough to swap out the other side.
Not impossible if you unbolt everything, but keeping one side lined up speeds the process up a lot and less wrestling!
I did mounts on my 05 Jeep 4.0L. I jacked one side at a time with a floor jack and piece of 2x4 under a solid spot on that side.
Piece of cake!