Micro H-Quadcopter 3mm holes.

Imported STL into SketchUp and made the motor holes 3mm with 16mm spacing for 2204 motors like sunnysky.

Also opened up the central holes to allow room for the cir-clip on the bottom of the motors.
The gear may change as there is not alot of room for battery.
UPDATE:
Added new landing gear design.
Gives alot more room for battery options. (40mm of ground clearance)
Mounts using the same bolts as the motors.