Or you could change out the front brakes and rearend to a 73 and up A body that has disc brakes and uses a 5 x 4 1/2" bolt pattern, then you will solve a bunch of problems
Buy some 14 or 15" wheels in a 5x4" bolt pattern. Selection is very limited, though. Cragar SS's, Mopar Ralley Wheels in 14", you may can get some aftermarket Ralley's in 15", I'm not sure. Mopar also made stock steel wheels in 14 x 5".