I don't recommend you put a window motor in a toughbox for one reason. A window motor in a toughbox would be
SLOW. Window motors have a free speed of 84RPM (already pretty slow) by themselves and gearing that down to the 12.75:1 gear ratio of a standard Toughbox would give you a free speed of 6.6 RPM and a speed of 3.1 RPM at nominal torque.
Why don't you just use the window motors by themselves instead? In the KOP you got adapters for the window motors so you can attach the motors directly to a 5/8" shaft. Plus window motors have more than enough power by themselves to move just about anything you can ask them to. Just make sure you don't cantilever the shaft
Also you don't need a gearbox for the window motors because they already have one. The metal silvery thing sticking out the side of the window motor is a motor and the black part is the gear box which houses the worm gear (the reason window motors won't back drive). Before you get any ideas no you can't modify the window motor by separating the gearbox from the motor like you can with the Fischer price motors. The gear box is considered to be intergal to the motor which means you modify the gear box you modify the motor, which is against the rules. If you want a more explanation of window motor modification see this
thread
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