Rear end ???

I am in the process of swapping out the rear end in my 70 Duster from the small 7 1/4 to a 9 1/4 that I found at a good price. My problem is that the brakes on the 9 1/4 are adding 2 1/2" to the width? what are my options as far as brakes to bring the width into where it should be, i.e. 1 1/4" on either side?

Thanks,