Let's start out by saying I got the bar at CJ4, and Karl didn't have a bolt kit put together yet as he had just finished the bars 48 hours beforehand, so my bolts are going to be different than everybody else's who's ordering them through their website.
1. 15mm socket (For Nuts) and a 5/16 Box Wrench (Size of the nuts and bolts I used, mine are different than the ones included in the kit most likely).
2. BFH (Required)
3. Razor Knife
4. 3/8's Drill bit (once again, size I used) AND a smaller drill bit for drilling the pilot hole.
5. Sharpie or any black marker
8. Rubber Mallet
9. A Second person (most important!)
First off, start by getting the car into the air either by putting it on a lift like myself, or using a jack. The purpose is to get the car's weight off of the back wheels.
Then remove the rear wheels, this will come in handy when tightening the nuts on the shock tower.
Remove the side carpet pieces in your trunk.
Here is where you can decide where you want your bar to be placed. The little piece of the strut tower that's protruding out with the arches on either side. You can put it on either side of there. I chose to put it on the rear one to make a little extra room in my trunk. Also remove the foam sound deadeners on the top of the strut tower for mounting. They stick on, so you can put them back on after you've tightened everything on.
This is what it looks like with everything mocked-up where I wanted it.
When you have the bar positioned where you want it, take your sharpie or black marker, and mark the hole position on the strut tower so you know where you want to drill your pilot hole.
Now, take your Hammer and Awl, and punch a small hole where you marked with your sharpie to give your drill bit a good place to start without moving all over the place.
This is with my pilot holes drilled.
Now take your larger drill bit (should be the same size as the bolts that come with the kit, like said before, I used 3/8's bolts, so that's what size my drill bit was) and drill the holes larger for the bolts to go through.
Place your carpet back in.
Have a second person hold the carpet from the inside of the trunk, and take your awl and make a hole through your carpet from the outside of your car.
Now comes the time to put the bar in. I tried installing it every way possible, but there was no way in hell it was going in, everything was too tight. So I went ahead and pulled the carpet back out, and cut some of the sound deadening out with the Razor Knife. The bar was still extremely hard to get positioned, but I could actually get it positioned now.
With the sound deadening removed, I put the carpet back in, and took my rubber mallet, and rapped on the bar for a long time to get it into place. It takes some strength and endurance to do, as it takes a long time, but you'll eventually get it. Once everything is in to your liking put your bolt and washer on the inside of the car, and put the lock washer and nut on the outside. You'll need one person holding the bolt from the inside while the other tightens the nut from the outside. Everything should be installed now!
Go out and have some fun with it now!