I would love it if Lionel had installed sound into their more modern mechanical reefer. I'm tempted to buy this set, and remove the board for install into their other reefer. I have no interest in something this old because I do model modern.
I don't know if I should wait for the next set that may never come?
If I remember right, the Lionel is triggered by an axle magnet? Would be cool if this Sountraxx board was triggered the same way for us command O scale users.