I wonder if the Dana 30 that comes with the JK is stronger than the old Dana 30, I think that the Dana 44 is stronger than the old one, am I right?

 

I think they're same--based off observation. I only wish they didn't make the control arm brackets/shock mounts so low to the ground. Don't care if that design is suppose to improve shock travel or ride quality or whatever; when 4-wheeling it's not comforting hearing them hit a rock.