PTO option, the brake system, SIR system, and other general information for these vehicles. Available in ¾-ton 2500, 1-ton 3500 single rear wheel, and 1-ton 3500 dual rear wheel configurations with 2WD or 4WD. These trucks have at least 10inches (25.4cm) of ground clearance, with an improved approach angle, and a repositioned diesel exhaust fluid