Rear Shackles

This will be the first time we have had to fix rear shackles where the shackle boxes are getting very rusty. Man, I don't think I realized until now what poor material Chrysler used to make these shackle boxes with. Took a real good set out of a parts car but not sure whether to have a new set made up or just weld up and use these ones. Has anybody had any experience with this common problem and maybe used a heavier material? Thanks
Author: Dobaroy