1993 Safari continental 37' cracked frame, bad shock install

The problem isn’t the travel of the suspension. It’s the leverage those brackets are putting on the frame! If they were properly mounted to the frame with a bracket that attached the bottom of the bracket to the frame then it wouldn’t have that twisting motion. With it being mounted with 2 bolts at the top it’s acting like a pivot and stressing the frame which is what is causing the cracks. If it were mine I would extend the bracket so that it is bolted below it also it would eliminate the stresses on the frame!