The Ford Dana 60 flat top truss is ideal for mounting 4 link bracketry to your axle while also adding unsurpassed durability. This kit does require trimming of the casting and removal of all factory brackets and is made with a 3/8" top. Additional grinding or trimming may be required due to variations in castings. The 1999-2004 Pro Series Truss kit will not work with our Superduty Dana 60 Double Ended Ram Mount.