I decided today that I would relocate the VHF radio unit from the instrument sub-panel, to a position under the floor. I originally had the radio unit located right behind the intercom, however I didn't properly consider how much space the intercom connector and wiring loom would take up. It was all a bit too tight a squeeze so, since the intercom is panel mounted and cannot be easily moved, I decided to find another spot for the radio unit.
I'd previously considered mounting the radio unit in the underfloor space, same as the transponder, so I reverted to this idea.
Today was spent just rerouting some of the cables. Will try to get them all finished tomorrow.
Much better clearance behind the intercom
The Com unit will be better located under the pilot side floor space