I am new to the forum I am a ford diesel technician. I guess thats why i baught a cummins. My rig is a 2004 2500SLT quad cab. I am curious on how this anti spin differential works inside the AAM 11.5 axle? I am very familar with lockers and limited slips but if I am reading correctly these trucks use a work gear torsion system? any truth to this, any pic's available from some one's rebuild or replacement? What are the opinions on this system I am origionally from the snow belt and now live in the desert so soft, slick, or uneven surfaces are common for my regular driving? Any information is much appreciated.