figured it would get ya sooner or later. I assume ridetech got back too you then?
not sure how much space there is behind that spot you circled as the underdash is right under it and you will need a couple of inches for the wiring connections. Same with the spots for the gauges. Next to the vert switch would work or else I have a switch to use both batteries to start my car on the side of the consol by the seat belt clasp(hip area).
If ya want to get really fancy, you could get a single gauge display from PLX deviced and the pressure module has the ability to monitors/display two different pressures at teh same time, as well as other modules(fuel press, temps, ect). This would allow you to monitor multiple modules with only one gauge and really no concern about dept with that gauge as they are pretty slim too.
