Much relieved to find the two pilot holes in the firewall. Used a Unibit to open them up with AN6 sizing (3/8") and hung the firewall. Blue is protective cover, which I'll leave in place for some time.Second photo was to confirm how close the pedal/brakes would be. Not the pedal is further back than it would be at full rudder, plenty of room. Notice the sheet metal floor lid at 120 degree bend back. I had stated with 90 degree, but not enough clearance. If a pencil "lands there" not an issue.
