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 Magnum 500 Wheels. Two are 6" and two are 6.5". When I mount them on the hub, they hit the calipers. Just barely. I also have a set of 14" Magnum road wheels that fit and don't rub. However...... I like the 500's better. Now what? Thanks