We have a 2007 Dodge 3500 diesel Megacab that we tow a Niagara HW with and we love it. It has 155k on it with the second transmission. Apart from redoing the front end a couple of times, being harder on brakes and such because of the weight, it has been relatively problem free. At the moment the top of the rear wheel wells are showing rust bubbles which has got us thinking maybe it's time to sell it, get a good return for it and buy something new. DH will be retiring in a couple of years and is pushing for the sell so that we can have a new vehicle paid for before we are living off a decent pension and savings, I want to fix it up and keep it. I would appreciate all thoughts and observations.