Barracuda tire Question

From what I have been reading, and what I have found on my 68, when you put the later model disk brakes like I did , it widens the front track . This causes the tires to be moved out of the wheel well about an inch per side. I have a rubbing issue also. To correct the problem you will need to use different rims that have more back spacing to move the tire back under the wheel well . I need new rims too !