Jeffery, FWIW, on my older 235, the flap cross-over weldment runs right
behind the bottom of the seats and is enclosed in a structure similar to the
box-like enclosure for the elevator push rod and aft wiring. I mounted my
Whelan power supply on the lid of the enclosure behind the passenger seat.
It's out of sight (unless you stand on your head to look) and out of the
way. I have had no interference with my radios with this location, though
don't know if I would have with any other location.

Dan Schaefer