I ran a Lock-Rite in back of me '95 YJ with no real problems. It takes a while to get used to; you have to soft-pedal it around town, in the snow, and on muddy hills. There's a real tendancy to get sideways if you're not careful, but it's easy to learn to deal with. If you're too heavy on the gas while going through turns, you'll end up with massive under-steer or wind up in a spin.
Off-road performance is fenominal. I rarely needed to lock in the 4WD.
As far as installation, it's a breeze if you have 3:73 or lower (4:11, 4:56, etc.) gears. The problem with 3:55 or 3:07 gears is that you will need to pull the whole carrier out to get the Lock-Rite to clear the ring gear. The teeth are just too tall. Unless you can dial in your own gears, you might want to go for a stronger setup and have a pro install it for you. A better option for daily drivers is to go for a Trak-Loc or Aubourn limited slip. For 3:55 and 3:07, Detroit's TrueTrak is an ourtstanding way to go. Limited slip will behave itself better in slick conditions. Lockers will only pay for themselves in extreme bolder-crawling situations. My new TJ has Jeep's Trak-Loc limited slip, and it does everything my the Lock-Rite did, without the bad manners.
Hewgag
Right Wrongs Nobody