anybody running this differential

First off, it's not a Detroit Locker. Detroit Lockers are somewhat harsh. They are either on or off. There's no in between. They make noise when they engage and disengage. Pretty loud. Some people can stand it, others cannot.

What you are looking at is a Torsen gear type limited slip unit. Detroit Locker is the name brand it's marketed under. Kinda confrooshin, really. I have no personal experience with them, but everything I have read is very positive. They operate like an open differential under normal driving conditions. The way I understand it, the more torque is applied, the more the unit "locks up" if you will.

Maybe Dr Diff will be along and impart a little more, but I believe that's how it operates. They are supposed to be very good units.