Welding might help your situation, but most of the Dodge frames flex in this area. I just had to repair my 2wd frame behind the steering box. The bracket would be easy to make, or for the ultimate try boxing the frame.
This isnt my info, it is some that was found on the web.
1975 Ramcharger 6" lift 35" Mud Terrains 8 lug 44 front, 60 rear. (R.I.P.) 1976 D100 lowered 3" & 5" Now with a 440!!! (sold) On the hunt for another beauty to build.