Yes, your stock cross member (rear differential brace and shock mount) can be cut out and the RATCO unit can be welded in in its place. That is exactly what I am doing. My cross member broke from the tube shock conversion. It is a PITA but has to be done. I removed the entire rear suspension (not the TAs), including the differential and half shafts. I also removed my rear brake lines (needed to change the flex hoses anyway) and the emergency brake line (simple to do) The gas tank also came out because I am not too fond of welding that close to a gas line. Oh, and the rear 1/2 of the exhaust system. Got plenty of work room now. I will get some pics near the end of the ordeal, er, project.