14" magnum wheel problem

Let me re-phrase this:

I have a 1968 Barracuda that I just put 73-76 Duster disc brakes on. These are the 10" rotors. I have a set of the all chrome 14" Magnum 500 Wheels. Two are 6" wide and two are 6.5". I was going to put the 6" on the front. When I mount them on the hub, they hit the calipers. Just barely. When I put the 6.5" on, they also rub the caliper. They rubbed about an inch of paint off on the top and bottom outside edge of the caliper. The calipers are mounted to the rear because of the early model sway bar. What are my choices? Grind the caliper a bit, buy some spacers, grind the wheel? Thank you to those that try to be helpful.