1458 Class 104 2 Car DMU L701 53437/53479 Revised Network SouthEastClass 104 2 Car DMU L701 53437 53479 Revised Network SouthEast PROTOTYPE This much requested and widely travelled First Generation DMU now in development, providing the ideal companion for other HELJAN OO gauge models, including the Class 25, 45 and 47. Design work is underway on HELJANs next OO gauge project the BR Class 104 DMU built by Birmingham Railway Carriage & Wagon Co. for the London Midland and North Eastern Regions. CAD work is in progress