No, it's not a concern of leaf spring contacting jnside of hanger, rather, it the shackle and equalizer hitting the hanger specifically center hanger. Take a look at these pictures, circled in red is where I already get some light contact. Hanger is about 4" wide at contact point and widens to 5" at the top. Moving to upper mount will shift it to an even wider point and more contact.
I already went one size larger on tires.
You're correct I could just do the spring over and not mess with changing spring mount locations.
I would have to go check but on mine but I'm pretty sure the center bracket is shorter and squared off. The two outer ones have the angled cut.
You could cut of the angled one off and weld on a shorter square one.
