NO contest: The original Lionel "Madison" cars! Maybe you could also find a Lionel repro observation to match the three original coaches. The Lionel Trains, Inc repro four-car Madison set from 1990-91 are made with heavy plastic like the originals, and would also be a good choice. The Madison cars, though not scale, would create a more postwar "look"! Whatever you choose, ENJOY your 773! :-)