SDS users - where are you mounting your ECU?

Starting to look at mounting/installation options for my ECU now that I have the system in hand and wondering where others (especially 6/7/9 builders) are putting their ECUs. One thing I?m considering is a drop-down shelf/panel for the ECU, injector relays, and engine bus fuse panel, all hinged off the subpanel. Another option is mounting all of it to the subpanel but then space might start to get tight with the other components.

If it helps I?m thinking of a four-part main panel?one lower section for throttle quadrant and switches, then center, left, and right.

I mounted mine to a pair of aluminum angle rails that run between the subpanel and the top horizontal angle of the firewall. It supports electrical distribution components on the top, and the EM-5 below. Easy access from there to the firewall for running engine cabling forward.