Dynotune Lean Shutdown Display...
Glove box, I think would be a good spot.
Some people should post up pics of where they have mounted their electrical parts.
i have mine mounted where the red rectangle is. the yellow is a half circle hole that i cut into the guage cluster bezel using a drill bit. just big enough for the wires to go through. the blue represents the wires. the a/f lean shutoff switch is mounted using velcro. it only slightly obscures the gas guage. probably more so than that pic would depict.

