There's going to be some clutch head screws that won't want to come loose. You'll need every possible size and type of locking pliers made, probably a hammer and chisel, some heat would be nice and a standard socket/wrench set with a variety of screw drivers. A fully charged cordless drill with a fresh set of bits to release the bolts that the other tools won't get too.
Use some penetrating oil on the mechanisms first and work them so they work easier because you'll have to move the regulator some to get it apart. Besides, it would be easier to free-up when it's still mounted to the door.
Good luck,
Scott
