I changed my mind on how to mount some of the avionics components, I made a tray that will be riveted to rib 3. That will stiffen the rib reducing vibration I hope and allows me to place the FLARM, SP12, EX 2.0 & either the Garmin GSU25 or MGL IBOX all in the one tray. I made some channels for the standoff also in the hope of reducing vibration. Drilled mounting holes for a IBBS backup battery & also drilled all the holes required for the VPX mount.