Lumps I was just gonna do the same thing till I talked to a few tire shops and chrysler dealers, if you want to raise the truck you are better off doing the full suspension lift, Leveling kits affect the angle of your torsion bars and make it a rougher sloppier ride, after talking with a few tire shops I ended up deciding on toyo open country mud terrains in a 33.5 inch tire, no rub but plenty of height, and a 12.5 inch wide tire, if you do go with the leveling kit make sure you put in a set of rancho shocks at the same time, it wil help the ride a little by stiffening it up. If your thinking of getting new tires talk to Jason from Symons tires in Mission he will look after you really well and if your old tires are in decent shape he will take them on trade, tell him Thomas from TNT Marine sent you by, or talk to his Old Man...
Awesome service with the best pricing.
BTW the older diesels handle the leveling kit a lot better than the new ones,,