Welcome to the forum Juan Rivas. When you have a chance, head over to the Newbie Section and say "Hi".
Tell us a little about yourself and your ride.
That way we can welcome you all proper like.
Junk yard donor would be your best bet. The axle has to be from a Nitro for the ABS tone rings to match.
For an 08 R/T, 4.0, Nag1 trany, the axle ratio is 3.55:1.
Not all axles are created =. In some of the later years Dodge changed some of the axle ratios.
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