* Add 2 Part 4870c01 Light Gray Plate, Modified 2 x 2 Thin with Dual Wheels Holder - Split Pins with Light Gray Wheels and Black Tires (4624 / 3139) (Counterpart)
* Add 2 Part 4868a White Engine, Smooth Large, 1 x 2 Thin Top Plate
* Add 2 Part 4869 Light Gray Engine, Smooth Large, Center
* Change 2 Part White 4868ac01 Engine, Smooth Large, 1 x 2 Thin Top Plate, with Light Gray Center - Complete Assembly {Regular to Counterpart}