I was out at the hangar yesterday and looked at that spot on the left side. What I didn't like about it is that it's likely to interfere with the brake lines coming out of the reservoir in that location.
What I can't tell, Bernie, is the forward end of that angle. Did you rivet it to the firewall? Or is it somehow attached to the angle on the firewall and hangs at an angle?
Marc, I looked at that location you mentioned yesterday. With cables coming out both ends of the box, it seems to me that at least one side would require a severe bend to clear either the top skin or the side, depending on the orientation.