I've been thinking about doing it to mine as well. The thing that keeps holding me back is having to cut a whole on the body. It's not so much the cutting that makes me anxious, it's what can happen if it's not properly preped afterward (rust). One day, when I have the money and if I still have the Jeep, I think I'd just hack the fenders (both front and rear), in which case I'd need something like that as well.
I'm not sure if the 2x6" lights would looks that great though. I haven't seen them, but from the dimensions it just looks too skinny, not sure I'd like that. I've seen some that are kind of oval in shape which I think would look better (not sure of the dimensions).