Urgent!! will front brakes work on back

I think the brake parts are totally different. I know the wheel cylinders are. You need the 10 x 2.5" from just about any car dated from 1965 and newer. I got mine off a 79 Plymouth Volare (A member here hooked me up). Just about any car, truck or van will suffice. I assume your doing this for the same reason I did? Large bolt pattern??