The plans would have you mount the red cube in the tunnel, but it really needs to be mounted downstream of all of the fuel pumps. So I opted to mount mine FWF. Some builders that have also gone this route have fab'd a bracket to mount the cube to . I have opted to use a mounting suggestion from EI the cube's manufacturer and simply hang it by splitting the fuel line from thde fuel pump to theuel servo. Once I complete the wiring, I'll cover the cube with a firesleeve I bought specifically for this purpose from Aircraft Spruce.
