So I just read the post about headers and warranties. Well I really want some high flow cats but the Dodge dealership Lithia in college station swears up and down if I touch them my warranties voided should I just take thier advise or go ahead? I would love some cats tho. However I cant loose the warranty its def. paid for itself ive already had about 5 grand worth of work done that was covered I paid about 200 in deductables not too bad. Thanks for yalls time.

I have lifetime drivetrain warranty and don't plan on changing that. Depends on what you want, many "lifetime warranty 07's" do lots of stuff to their truck that voids the warranty.
Dan

Take it to another dealership. If you change the cats, then that part will no longer be under warranty but everything else should be. You are protected by the Magnuson Moss Warranty. If you buy parts that are made for your vehicle and they are not the direct cause of a failure, they can't void your warranty because of the part.