Thanks guys, I appreciate the response. I'm familiar with the rears in some of my other cars, detroit locker, TL, ZF, Quaife, etc, just wasn't sure what the real story was on the new Expeditions, sounds like I have nothing to worry about.

Sure wish I knew what was in store for the 2011s motor wise, not sure whether to buy an 2010, or wait to see if the big motor is available in '11.

Take care, thanks again....