So the Chassisworks kit has you strengthen existing mounting areas utilizing stitch welds, then you fit and bolt the cradle pieces. Tack the crossmember together to fit your car, then go back and bolster some areas with a reinforcement cap and refit the same cradle pieces back to their original positions. Finalize the installation by bolting and welding in the cradle pieces as well as the crossmember. I’m impressed, this sucker is really in there for good!