We turned to Dynatrac for a set of heavy-duty TJ axle brackets. The driver-side upper control arm mount needs to be on top of the cast iron differential. Welding to cast iron is an iffy proposition; unless it’s done perfectly, you are going to end up with failed welds. For this reason, the best plan of attack is to build a truss out of mild steel that spans the cast centersection and is welded to the axletubes. Dynatrac’s axle bracket kit is designed to work with its own Dana 60 castings, which differ from our Ford unit. We used two Dynatrac trusses and modified them both to make one that would work.