Motor Block with mounting holes

Designed to put two gear motors of this model back to back:
http://www.pololu.com/catalog/product/1120

or the lower torque equivalent of the same housing.

has 3 mounting holes on the top and bottom.
has 2 mounting hole in the front, added after picture was taken.

Includes a hole to line up with the tab on the motor.

Designed to be a modular component of my sumobot.