rear end Width

Sweet, Thanks guys. That may be the deciding factor on whether or not I buy this Duster I found. Its a 74 with a 318 3spd but comes with a 4spd. For some reason it has a 7 1/4 small bolt rear and big bold disks up front. I have a 65 coronet wagon that I am not sure what to do with. So the rear may end up going under a duster. Anyone need some 65 wagon Parts?