I was just wondering what combo of axles are being used in the 2500 and 3500's this year? If you know the ring gear size but not say if its a Dana 70HD that would work too. thanks

 

I could be wrong but I don't think it's a Dana! What ever it is (Chrysler I think) it's huge and I haven't heard anything bad about it.

 

I heard somewhere that the rear diff`s are being built by "detroit axle",
but dont hold me to it, i could be wrong. Also looks like a very rugged diff too...!!!
I think they are around a 12inch ring gear...PLENTY heavy enough by my standards.