How about the addition of a panhard rod on the back axle to keep it out of the fenders? Not sure if they offer any help to leaf spring rears but every A I owned has rubbed a tire once or twice. View attachment 1715729749
founds some vid of @autoxcuda and his Hotchkis TVS suspension. Check the center tread of the tire and its deflection. Not sure if its the sidewall flexing or the leafs moving.