Avionics - ACM, ADHRS
I mounted the Dynon ACM on the right side behind the instrument panel, then fabricated a mounting bracket for the ADHRS and mounted that in the center. This all worked quite well.
I’ve yet to find a suitable place for the battery. Ideally it will be aft of the firewall due to temperature issues if it’s mounted forward of the firewall. Under a front seat is a serious contender as it gives excellent access, but does require a longer cable run. Behind the instrument panel would keep it closer to the firewall for CG consideration, but complicates access and connection.