The Ram 3500 gains a supplemental air suspension system that improves ride quality while towing.

There are plenty of ways to spec your Ram, including two-wheel or four-wheel drive, and a choice of engines, transmissions, cab sizes and bed lengths in a lineup of several trim levels.

• Tradesman:
  The base 3500 is a rare-bones work truck with vinyl seats and manual functions.
  
  
• SLT:
  No one will call the SLT fancy, but it adds some nice touches like a satellite radio and an electronic brake controller for trailers.
  
  
• Big Horn:
  This is a step up with features like premium cloth upholstery, remote start, UConnect with voice command, and Chrysler's telematics system.
  
  
• Laramie:
  The classier Laramie includes a nine-speaker stereo, a rearview camera, and a 10-way driver's seat with power lumbar support.
  
  
• Laramie Longhorn:
  Things get more luxurious in the Longhorn, with amenities like satellite radio and traffic alerts, Bluetooth, wood and leather trim and high-backed bucket seats.
  
  
• Laramie Limited:
  The ne plus ultra Laramie comes with luxury-car perks like leather upholstery, heated front and rear seats, and rain-sensitive windshield wipers.

• 383-horsepower 5.7-liter V8 Hemi
• 410-horsepower 6.4-liter Hemi
• 350-horsepower 6.7-liter Cummins Diesel