Just joined the site after days of research trying to find answers on non current tow ratings. Anyway upgrading from 04 Ram2500 Cummings with a 1995 25' 5er and 6' x 10' quad trailer in tow to a 2007 WW Slc 3905 40' gvwr 16000# toyhauler and leaning towards a 2007 Sierra 3500 hd Classic (lbz) Good combo?