Specifications include, but are not limited to:
GROSS VEHICLE WEIGHT RATING
Gross vehicle weight rating shall be a minimum11,500 pounds with single rear wheels
Gross Combined Weight Rating shall be no less than 26,500 pounds and include a high capacity trailer tow package with a maximum towing capacity of 13,500 pounds
WHEELBASE AND CAB HEIGHT
Wheelbase shall be not less than 145 inches, or more than 147 inches.
Cab to axle dimension shall be 60 inches (± 1 inch).
Cab height shall not exceed 84 inches.
ENGINE AND COMPONENTS
Engine shall be diesel powered, turbo-charged, six or eight cylinders, with no fewer than 6.5 liters or more than 6.7 liters displacement and shall be rated at no less than 330 horsepower and no less than 750 ft.-lbs. of torque.