That unloading auger is about the shortest one I have seen on a 90.  I have another 90 with an unloading auger that is about 3ft longer.  This combine was bought by the previous owner in 1968.  He then added the chopper because he swathed his crop every year and wanted the chopper to chew up the heavy windrows.  He parked it in 1984 and used custom cutters after that.