Recently tried to use the old 9v front upside down and came up with this engine. Really interesting to realize how different the same piece can look this way up. Also funny to see which huge potential a piece can have no matter how old... Similar to the old 9V style the engine features opening doors (although brick built) and all the internals are easily accessible. All parts exist in the shown colours and I tried to keep the parts count and lot count low. Tried different liveries, however...