| Redesigned during production.
There are at least 2 different versions of instructions for this set. The differences for the second version are indicated in this inventory in the Alternate Items section with Match ID 99.
Quick overview of redesign: Dual wheels underneath are replaced by single wheels and a stronger pivot structure is designed for the ones that turn. The early version has 274 pieces and the redesign has 264 pieces.
| 
inventoried this Set on Feb 25, 2007