With the 4.10's, 5 speed and 4x4 geared tires, you'll be running 2500rpm @ 60mph. However, the automatic can tow more than the manual, by roughly 2000lbs, which is significant for a compact truck. If the trailer is around 2000lbs, the truck will perform fine once you load in passengers and some cargo.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!