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Looking at replacing my ring gear and posi unit in my 04 2500HD. Keeping stock ratio 3.73 but you cant buy clutches from AAM for the rebuild of stock carrier, so I will have to replace with entire new carrier (posi unit) any recommendations on best gear sets and Posi units?

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When the G80 in my old truck blew up I went with the AAM torsen diff. Are you going to stay with 3.73? If so check off road shops for good takeout gear sets.
 
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