Outrigger Spring hangers

These are some Outside (Outrigger) frame spring hangers designed for a 1967 International Harvester B1100. They're designed to fit 63 inch chevy springs, using GMT400 rear shackle hangers.
Distance from back of mount to inside eye is 2 inches. Mounted with 3/8in bolts. The slots in the parts are sized for 1/4 plate, which could likely be 3/16s safely excluding the backing piece. The 2 side pieces will to have their upper ears bent inwards to weld on to the back plate.
The final iteration of mounts needed to have the upper slot enlarged and have 2 bolt holes relocated.
There are STEP files and SLPRDT file for modification.