I hear you about the location and age of the car. Every one is different. I am very lucky to be driving a 14 year old low mileage FX that is garage kept and usually doesn't stray outside on cold, wet or even snowy days. On a scale from 1 to 10 it seems my FX would likely be a 1 or 2 and yours is a 9 or 10 in difficulty on this repair. Thanks for the update though. The one example that I could find for this repair was a California car and, unfortunately, we don't all live in California.
05 FX35, Silverstone, Graphite, Touring, Escutcheon, Sport Pedals, LED Dtrl's(thanks rookie), Stillen STB, +2 Timing, Stillen CAI, LMS Z-Tube, Grrrowwl!!, Plenum is next (OK - well - actually the G35 E-brake pedal is next, but I swear, something is going to happen with that plenum).