nova wagon rear leaf springs

:eek: i have a 67 nova wagon and i converted to a multi leaf spring from the weak mono style, i got them through Global West they are de-arched. so i installed them and now they are hitting the rear box (bumper box) sedans dont have that box, anybody out there have a nova wagon with multi leaf springs that can give a dimension so i can have Global West re size the main leaf.

Erich