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Hi, yes mine appears to be 9.75 rear and 8.8 front. The only selectable diff lock I found so far is Auburn that works as limited slip when not engaged and fully locked when engaged. But Some people on the F-150 forum says it doesn't work as advertised. They just fail to work. Any idea about...

Hi sir, I replied to you here http://www.expeditionportal.com/forum/threads/89231-Limited-Slip-Faceoff-Detroit-TrueTrac-vs-ARB-Air-Locker/page10 Would appreciate some input

I would like to re-open this discussion here, I have a 2012 Ford Expedition, is the combination you mentioned is still up to date or did you find something better? What is the gear ratio of my car ? is it 9.75" or 8.8" ? What part number is the correct one for me and where to find it?

How about a 2012 ford expedition? Do you have any recommendation before I order it from Amazon? I am going to order ZEON 89120, but I need to know the precautions before installing it on my expedition. Please do review my topic and list your recommendations. Thanks