Need help - recently saw an O gauge Union Pacific "Dash 8" diesel set - Powered unit cab #9450 & Non-powered unit cab #9451. Can't seem to find out WHEN these were produced and if there is a Williams product number for each or for the set. They WERE packaged individually and in boxes that are identical to the current Red/Silver/White boxes with a window. Any help would be much appreciated! Thanks! Tom [email protected]