Mounting LightSpeed Module in RV-7

I purchased my plane already built, and I am now having my mechanic install a Light Speed Plasma III electronic ignition. Can anyone advise of a mounting location for the electronics modules? The firewall is recommended but can a contortionist still get to the firewall behind the rudder peddles?

mounting

It doesn't have to be much higher than the top of the rudder pedals. You will need to bring the cables out if the two "transformer" modules are to be on the firewall. Also, make sure the leads to the spark plugs are the correct length. They can make custom length leads if you mention it when you are ordering the unit.