Or Special model - design or construction , shortened it is abreviated to SO ! Famously - so23 or Westfalia so23 a early splitty and some say the best westy conversion , did you know all the westfalia conversions have a " SO " number ? Westfalia continentals like mine with the front hinged roof are either so69 or 70 depending on the seating configuration and the later rear hinged ones are so72 , there are later numbers for later model layouts . Just thought i would tell you that
