Description:Reuse Hardware, Springs, And U-BoltCnc Is Cut From 1/4 “Steel Plate And Formed On The Bending Machine To Ensure Good AssemblyDesigned To Use The Lowering Kit To Increase The Total Suspension Travel Of The Pickup/Truck,The Rear Axle Travel Is Limited.Fitment:For 1999-2006 Silverado 1500For 1999-2007 GMC Sierra 1500For Chevy Silverado GMC Sierra Trucks With 6 Lug Wheels 1999-2007 Classic 1/2 TonPackage Include:1*6” Rear Axle Lowering C Notch Flip KitW/o Product Instruction??