I save this post for such an occasion. This is for you that DON'T USE SEARCH. I have held off on this mod as well. I bought some ratcheting close end wrenches for this mod since my first tackle backfired.
From Greg L. on the list. Sorry Greg I can't recall your name here.
Yes for the fronts I did loosen the subframe. You can get over an inch of
extra clearance without removing the bolts completely. (very simple
procedure) I loosened the rear subframe bolts, but did not remove them.
I loosened the rear bolts on the bushing caps, but removed the front bolts entirely. This gave me enough room to slide the old bushings out and the new ones in. (highly lubed of course, don't forget the lube!) Plus I didn't have to try and line up the bushing cap for install. I just put the front bolt it and tightened it down...
I also had a set of gear wrenches among other tools to make it a little easier.
The driver side one is not too bad, but the passenger side one took some
time and finagling.