Need some help controlling body roll

72Blunblu is the man on this.

If it were me, knowing what I know now, I would get an A body housing from Dr Diff with narrowed perches for a 1/2" spring relocation kit, includes rear hangers (also from Dr Diff). This solves all the issues now and into the future.

Your 15x8 wheels will fit. Your squiffy long hangers disappear. And if you want to go a touch wider than 275, you have room to grow.