APM2 and Receiver Mount

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/cQerwDH6wm1

This is an adaptor plate for an Ardupilot to mount to the squared 45 mm mounting points on my tricopter frame. I am looking to add a case cover for the board, but need to design something to allow the on board GPS antenna to get signal.