Frame patches? I've never heard of such a thing except for a few brackets like shock mounts and spring hangers.
Yes for the available brackets shock,shackle, spring hangers all readily available but shop them all prices vary a lot! There are repair kits for the Jeeps and their rust issues . There is a lot of manufacturers of frame repair kit for many vehs. The later trucks I believe 2001 up to 2016 have all the parts available from DOORMEN OE SOLUTIONS they all rust like they were under salt water because of the waxy crap GM used so IV read.
But why is there no other solution for our trucks 88 to 94 . With all the water jet parts maker why not start making them . It sucks living in North east with only other rusty doner parts trucks.
they make c notch kits for lowering but none for reinforcing or repairing our trucks.