For anyone interested, I completed the maiden voyage from Ventura County to Big Bear. This involves a bit of climb (as high as 9000ft in places) and twisty roads. The truck is a beast at towing. I never felt a need for more power and between the 10 speed trans, tow/haul mode and exhaust brake, I felt more than confident descending the mountain with 12K lbs in tow.
The Andersen hitch performed flawlessly as well. Sure, there is a bounce when it hits a large bump in the roadway but the shocks on the truck settle it down almost instantly. I have an Airborne pin box with a shock and airbag. That might contribute to the stability. I have the AUH in its standard position with the ball back and the pin box adapter cup forward giving me 9+ inches of extra cab clearance. I'm not sure I need it because it seems like there is a mile between the trailer and cab - even in the sharp turn I have to make in my culdesac to park it in my driveway. FWIW, I bought the safety chain kit even though it is probably not necessary. I just want to avoid any potential issues with overzellous CHP officers and it provides a little extra peace of mind.
