For Christmas, my wife gave me these two N scale locomotives (an EMD F3A and F3B in D&RGW ski train colors). Does anyone know if any manufacturer is CURRENTLY producing matching passenger cars? I currently have 5 older Arnold/Rivarossi's that match (mostly) and have my eye on some others. 5 cars just does not seem like a long enough train for an AB combo. I'd sure like to double or triple that.