This truss is made just for your Dana 70 HD. Unlike the common trusses that you see on the market that have only one piece of bent steel that has to be tied into the differential cover to make it suitable for use, our trusses have a 1/4" main hoop structure and then have two 3/16" bent and boxed gussets all of which is made from 100,000 min yield steel to make them incredibly strong. The main hoop of the truss also has two bent flanges that face down to give it a boxed design and add structural rigidity. You will also notice that the boxed gussets are narrower than the main hoop. We did this so that you will have no butt welds but have the stronger T weld. We intentionally do not have unnecessary material added to the top of the truss. Our truss is made from 1/4" and if you add more material to the top it just makes it harder to keep the rig low to achieve a low center of gravity. We have tested the model in SolidWorks Simulation Professional (computer load testing program) and real world test and feel this is the way to go. The addition of the welded boxed 3/16" Gussets increases the welding surface area of the truss on your axle tubes to distribute the loads that your axle will encounter. With the increased foot print of our trusses they will also add structural rigidity to your axle and help prevent your axle from bending and warping. We offer a couple of different sizes so that you will have a truss system that will fit just right for your needs. This truss system was designed on our state of the art 3D CAD software, laser cut and bent with a CNC Press Brake. Like all of our products our trusses are made from high-strength American plate steel. If you shop around you will find that our truss systems are the best product for your four and three link suspension needs.