My axels and springs are exactly the same as the one ton but my 2500 does not have the overload spring. That's the main difference in the CTD HD trucks (2500/3500) The 3500 ends up with a Higher GVWR on the data plate (sticker).
I got a set of air bags rather than buy the overload springs. I now have ride adjustment and options.
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2008 2500 HD Megacab 4X4 CTD, 6 speed Auto, Mineral Gray. - 28TB Tahoe Toy Hauler
Utility quads, 2 kids and one awesome (and patient) wife.
Priorities not listed in order of importance.