backspacing on 68 barracuda

the car currently has g60-14 on 14x10 crager SS rims. (on rear) This car has been off the road since 1991 so the tires are shot and the cragers are pitted severly. I just love the stance of the car now....that is one of the things that sold me on it. I just love the huge dish on the rear wheels that hangs out past the fender.