Remove Torsion bars
This is the PITA step here. Now, there are 2 ends to the torsion bar. One end that attaches to the trunk arm and the other that is locked in place. First, get a big wrench or a big screw driver (as long as its big, you will need the torque). The part that attaches to the Arm looks like a U, place that wrench in the under side of that U and pry it off the moving piece on the trunk arm. Move that piece up so it fits flush against the arm, and let that U rest against there. Now, you are 1/3 done. Take that same wrench and pry out the ends of the U, once this is done, it might spring a little since its torqued a good bit. Once you have done this simply pull the bar out and start on the second one!!

Install torsion bars
Just reverse the removal procedure. Place the static part of the bar in its older, and position the trunk arm side as close as possible. Lift the trunk arm up and using that wrench pry the ends of the U into their holders. Then pry down on the U and extend that movable piece on the trunk arm so it fits onto the bar. Once you have done this, you are done and good to start on he other bar.

Install trunk
Same 4 bolts and remember to check that the trunk fits right before you try to close it.

Install Latch

Install Lock

Remove brake light
Remove Seats
Unplug the light which is in the trunk right under the light, loosen the 2 screws that retain the light.
Take your hand, slide it under the lid and pop off the rear lid that the light sits on (there is a big whole for the light). There are no screws, just 4 (i think its just 4) tabs that hold it in place. You can get to them from inside of the trunk as well.

Install brake light
Swap the lids (they pop right back in), plug the light back in and secure the 2 screws. All of our cars have 3rd light locations for the STi, and the other third brake light, so you don’t need to do any electrical work.