Here you can see Dustin installing the center portion of the truss kit. Basically this part consists of a factory stamped-steel differential cover with a section of boxed plated welded to it. Plates with captured nuts allow the center section to bolt to the axle portion of the truss. One wrench is all you need to bolt the three parts together. Once installed this further increases strength of the truss by distributing forces over the entire mounting flange of the differential cover.