 
          Intermountain Railway Company (IMRC) also produced N and HO
        
        
          scale models of National Steel Car’s 4550 cubic-foot car, which is
        
        
          similar to the HST version, but with detail differences. The NARC
        
        
          model is intended to compliment the IMRC version, as these are
        
        
          two distinct variations of 4550 cubic-foot cylindrical hoppers.
        
        
          
            NARC: Canadian National White Outline Hopper
          
        
        
          Available in HO and N scale