Anyone running with a leveling kit up front?

Based on my experience, I sit tail high when emptry and level when the fiver is hitched. If I were to add a leveling kit I think I would see a tail down attitude when loaded. If your that heavy, you might consider changing to 19.5 inch wheels like a lot of folks with 2500 series trucks have done to increase tire loading capacity. Of course that still does not change your truck mfgs GVWR.