We are seriously considering the purchase of a Big Horn 3670. We have a "05 3500 Ram withe 3.73 rear end, quad cab, auto, DRW and LWB with the CTD. I believe the max towing weight with the 3.73 rear end is a little over 14,000#. With the 4.1 rear the tow capacity goes up to about 16,000#. Is...