You typoed, you meant the 8860 :) I actually saw it in a catalogue back in the day, but I hadn't realized it had a differential. It was also already old when I

You typoed, you meant the 8860 :) I actually saw it in a catalogue back in the day, but I hadn't realized it had a differential. It was also already old when I was into Lego technic in my teens, at which time the 8865 was new and shiny. Edit: It also seems both the 8860 and the 8865 were using the same parts for the differential.