There are lots of examples of what you are looking for out there. The big shops like Stein, Aerotronics, etc, will have photos of what you are looking for in a 7/9 panel size. I have flown in a -6 with 2 G3X, GTN650, GMC 307, and a G5. Typically the G5 needs to be moved to the center due to space, which is possible with remote mounted radios and audio panels.
Never judge a man by his trim tabs.