Demco 5th wheel frame brackets are engineered to fit all major makes and models of trucks. Demco offers three different mounting styles for our 5th wheel hitches; Premier-Series, SL-Series, and UMS-Series. Many of them have “no drill” options for a simpler, time-saving installation. The Premier-Series is Demco's industry standard bed rail and use four bolts to mount the rails in the truck bed and connect to the brackets underneath. The 8552012 Hijacker Premier-Series Frame Mounting Bracket Kit from Demco is compatible with 2001 to 2010 Chevrolet Silverado and GMC Sierra 2500 and 3500 Heavy Duty Trucks (6.5' and 8' boxes) (Includes new body style). No drill attachment is included with this mounting bracket kit. Refer to Demco's recommendations to ensure a model specific fit before purchasing.