I need to swap out the rear end on my 01 Dakota Sport 3.9 4x4 extended cap. I've located a donor from an 02 Dak 4.7 auto 4x4. It has the same ratio (3.55). Does anyone know if this is a match? I'm guessing I have the 10 bolt and am wondering if this is a 12 and if everything will match up. Any thoughts? This may be anwered in another thread but I couldn't find what I'm asking.