[cal30_sniper]

I'm running a Richmond No-Slip in my 14 bolt FF rear end. I have given it a very stiff workout over the last 5 years, and it's never complained a bit. When a tire starts to spin under power, it locks up solid and spins both wheels. If you're turning under light throttle, it opens up and allows the wheels to differentiate, so there's no pulling or chirping. If you get on the throttle pretty good in a sharp turn, it will lock, and your tires will chirp until you get out of it.

Mine's a C20, so no 4x4 here, but I've taken it over some pretty nasty roads in Colorado, New Mexico, West Texas, and here on the east coast in Virginia, West Virginia, and North Carolina. As long as you stay away from deep sand or heavy mud, it's powered me through everything I've encountered. I've also towed 10k+ lb loads with it on multiple occasions, and never had any problem with funny behavior out of the diff. No problems on the limited ice or snow that I've run it in either. I really can't say enough good things about the Richmond unit, and wouldn't hesitate to install another in a truck.