I am building a Z scale layout and have not yet built them. However, The castings are amazing. Very well packaged and well packed for shipping. I needed a vehicle or two (4) to "scale" the area for a parking lot at the depot and other areas. Just started laying track on a 3x5 so could be a bit. I wanted to wait until I started painting scenery but I might have to sneek one in. The detail is astounding.