I like that rack. Where and how much? I'm assuming you had to drill the side of the Jeep. Looks good.
It's a Garvin Wilderness rack, I bought it through 4WD:
Specialty Rack by Wilderness Accessories and Other Jeep Parts and Jeep Accessories by 4 Wheel Drive Hardware
It's made so you can open the sunrider panel on the LJ without messing with the rack. When you want to drop the soft top, you take out the three bolts on either side of the front, and one bolt on either side on the rear. The whole thing then tilts back (they include some tilt brackets you can use to secure it in the tilted position while you drop the top.)
Yes, you have to drill the Jeep, but the instructions are very clear about where this needs to be done, and I was able to do so with no problems.
Overall it's a well-engineered rack. It's nice and solid. The lower mounts in the rear fit between the body pucks and the body, using the frame mounting bolt as one of their mount points, but they go further in that the same mount plate is reinforced by a matching one inside the body that gets bolted through the body. (it sandwiches the body between the plates.)
Nearly all the plates & brackets are 1/4" steel. The front mounts where you drill through the frame are likewise well designed; a set of outside plates bolts through to an inside plate which is also bolted to the rollbar, through a factory bolt hole. The instructions claim that 200lbs is a safe load, but that seems extremely conservative to me. Seeing how this is built, I'd guess you could probably double that, though I don't know that I'd want to move my COG up that high.
My only complaints with the system are as follows:
1) the kit shorted me two crossbar brackets. I'll call Garvin today and see if they'll send them to me.
2) I'm not real enthused about having to remove the bolts in the back to tilt the top. Each has a nylon locknut on it, so you'd need to have two wrenches to pull it. I want it to be fast and easy. I ordered some fancy 3/8" x 1 1/2" pushbutton pins from McMaster-Carr that I think will eliminate this issue.
3) Garvin has their company name laser-cut into a plate in the back of the rack. It bugs me when companies do that (though I realize most do). If you want me to display your company name, pay me. When I pay you, I don't want your logo splashed across my vehicle.
The only problem I ran into when doing the install had nothing to do with the kit- I thought the bolts I needed to take out of the rollbar were T-50 Torx, but they are T-50 tamper-resistant Torx. I didn't have the right bit so had to go buy one. I got the first bolt out, but the second one was so tight the new bit broke off. (tamper-resistant Torx bits are inherently weak due to the hole in the middle) I had to get a second bit to finish the job.