pb4ugo, not exactly correct about the LSD's. Yes, the GM Gov-Locks did require one tire to spin before the other side locked up. The Auburn LSD's are a completely different animal. They are working/locked ALL the time, on-road, off-road, 2WD or 4WD. They are able to release/slip during...
I'd vote Auburn LSD for the front all day long. Also keep in mind, in many instances the front end gets more bite than the rear end due to engine weight, so LSD up front would help in those instances- - -think about it.