Motor controller Mount

I working on a robot and needed come way to mount the motor controller. Luckily I have a 3d printer :)

The motor controller is a Double BTS7960B (http://www.ebay.com/itm/162618525315).

When the controller is mounted, access to the supply and motor wires are quite cumbersome, since the screws are facing downwards. Therefore I also created a stencil for a drill guide. Please note, I have not tried the stencil my self, but using it should create a hole similar to the one shown in the plate I