The shock gusset you’ll have to fabricate. I just showed a picture of my experience without any mods and how it ovaled that hole and another picture where I welded a piece of metal to prevent that from happening again.I have a gusset kit already, but not for the shock mounts. I'm not following what you're saying and not sure what I'm supposed to be looking at in the pictures.
The are circled on this picture is also where I recommend welding solid. Those joints are known to come loose and pull out.