I guess I am having too much fun with the forum but here is another request for opinion. I have been wanting to add Air Lockers but with a gear ratio change, the Air lockers, Air compressor and labor this can cost between 3 and 4k. I drive my WJ to work everyday and I think a typical locking (Such as the detroit Locker)differential my not be a good idea. I have notice several new semi or limited slip type units but I am curious to know if anyone out there has found them of benifit. Some seem to need too much enertia to lock up and will not be good for rock crawling. What have some of you GC owners done besides air lockers and what pro's and con's do you see.