Here is a scan from the 42011 set.. It has the part numbers for the New Smaller Panels....
Panel #21 - 6022750
Panel #22 - 6022752

I am not sure if this pull back motor is new or not.. It doesn't look like the older ones that I have..
Also, the new Panels have 2 Pin holes on the sides(right beside each other) and a single axle hole in the bottom of the base...















