The CMG crossmember is mandrel-bent, 0.120-inch-wall, 1020 carbon-steel tubing with CNC-cut flanges, and features precision TIG welding. Translation: It offers a perfect fit with serious rigidity. All kits come with an Energy Suspension polyurethane mount for longevity. If your body mounts are crushed or if you have floor sag, you will have to play with it a little to get the crossmember to fit properly. We had both issues, but it still went together with minimal effort.