^^ I agree, alot of dealer sell lifted trucks brand new (ok fine they installed the lift), it is kind of stupid that it is the dealers say whether or not they will warranty it on behalf of dodge, considering they dont pay out of their pockets for the repairs on the cliam, that gets billed back to dodge...
look into the magnusson act and maybe print it out too just incase, but what is the lift going to do is what I would ask myself, bigger tires WILL put more strain on your wheel bearing regardless of lift, so if you put bigger ones on count yourself out for those (unless there is a recall on them) I would assume tie rod and ball joint would be out of the picture too as far as getting warranty on BUT, those parts should wear out after your warranty is up anyways so you really arent losing much there....... Thats just the way I look at that kind of thing