I am beginning to puzzle out the exact locations for all the Garmin LRUs (Line Replaceable Units) that will be installed. My initial plan will be to build a three-tiered avionics rack behind the panel that will allow for reasonable access to the LRUs when the main EFIS screen is pulled out of the panel. On the bottom layer will be the remote GTR-20 (Com 2) radio. Above that will be the GEA 24 Engine Interface Module and the GAD 29 Interface Adapter. Finally, up top, will be the GSU 25 ADAHRS. I need to build a sturdy rack that doesn't flex, but can be disassembled with a socket wrench or a hex driver through an 8" x 10" hole. I like this kind of challenge. I began mocking up the structure using foam board, just to check clearances and figure out how it would attach to the airplane.