There are several variables to consider when matching a body model to a truck. The most notable item would be the Cab-to-Axle measurement, commonly referred to as the “CA”. This is the measurement from the rear of the truck’s cab, to the center of the rear axle. Body designs are typically grouped on product literature, etc. by their “CA” category. Your area Knapheide distributor can assist you with these, or any other compatibility questions. Other Resources: Cab-to-Axle Quick Guide Chassis Class to Body Size Compatibility Guide to Choosing A Truck Chassis