The first two pictures are the pilot side. (2) GTR20s and a GAD29. The standoffs are to allow for air movement.
The second two pictures are the co-pilot side. Transponder, Audio Panel and EIS. This allowed me to remove the Transponder through the Canopy opening. Note it is mounted at a slight angle.
The GDL39R and GAD27 are mounted on the back side of the same subpanel.
Important note: I am a first time builder, so this information is worth exactly what you paid!