A couple of talking-points.
Don't worry about "rear drive". All real pickups are either rear drive or 4-wheel drive with a transfer case and low range.
Also don't get hung up on "half ton", "one ton", or whatever. Since about 1990 those names have had nothing to do with the actual cargo carrying capacity of U.S. made light duty pickups.
3500 has more capacity than 2500 which has more than 1500.
Same for F-350; F-250; F-150.
My "one ton" truck has a carrying capacity of almost 4,000 pounds.
Limits went up dramatically around 2000 and then again around 2005-2006. The latest big jump was for the 2013 model year.
//for you "truck experts" these figures are for a new guy. Spare us the unimportant details of truck ratings.//
What I'm trying to point out is that a 2002 2500 does not have as much capacity as a 2007 2500 and that cannot match a 2014 2500.
They get bigger, more capable, higher off the ground, and more expensive.