Canadian Pacific (when it still was so) donated an SD40-2 to Exporail, the Canadian railway museum a few years ago. In any case, the SD40-2 series was produced from 1972 to 1988. Then again, CSX donated an AC6000CW - produced from 1995 to 2001 - to the LSRHS museum in North East, PA not too long ago either. I remember the magazine column header - "They gave what to a museum?" I guess a "classic" is a very relative term.