Right now my tow rig is a 2011 1500 with a 6.4 SRT8 Short block including cam and such and 3.55 gears, vararam ram air intake, 20" wheels and i tow my 7000lb trailer that is frequently overloaded and it is a beast power wise even with "just a 5 speed auto". It easily will get into way more trouble than the 1500 4 door 4x4 truck can handle if your not careful. No you don't need to rev the motor hard and MPG is great when empty (20 MPG is not hard to achive)and bad (12 MPG is normal) when loaded. It has a higher tow rating than my friends 99 cummins truck and pulls a load easier power wise. I am currently watching copart to find a 2010 up 2500 with a bad 5.7 or 6.4 to stick my spare motor in and sell the 1/2 ton but only because it is a 1/2 ton and I am needing to haul a bigger trailer not because any lack of power.

I would not get the 4.10 gears but that's just me.