Detroit offers several different versions of auto lockers, from the very minimal that simply drops into the carrier, to full on carrier replacements. Their models vary in overall strength, smoothness of engagement, and noise. Like they said, with a traditional auto-lockers, gasing it in a turn can be very dangerous.
http://www.jpmagazine.com/techarticles/46598/
http://www.truckworld.com/How-To-Tec...ers-Diffs.html