Talking to a local dealer about a new truck and was asking him about 2001 updates after july, and he told me that along with rear disc brakes, DC might up the GVWR on the truck line later in the year. Is this possible? I thought that they would have to install heavier springs, axles, frame, etc to up the weight rating. If this is true I may hold out for the heavier 3500 as I am already overweight with my current 3500. Thanks.