Lego Technic 8285 Tow Truck Motorized Modification
I got these LEGO® parts from Fedibeka LEGO® Shop:
http://www.bricklink.com/store.asp?p=...
Modification Include:
1 XL motor
5 m motors
3 receivers
1 battery box
2 linear actuators
3 differentials
both rear axles driven
pendular suspension on the steered axle
improved body and design