Make sure what calipers you have. I've forgotten?? Aspen Volare? or something will fit, and have larger pistons. So you don't want to end up with a small piston on one side, and large on the other!!
Also I'd check your upper joints. There used to be bushings you could get that allowed the use of drum upper arms and ball joints ---the bushings "bushed up" the larger taper in the top end of the spindles. Most use 73/ later upper arms "disk ball joints"