If you have the seats out I would recommend pulling the carpet out entirely and pressure washing the carpet at a car wash. It takes anothe 10 minutes to pull the carpet. You should find you'll get it cleaner. Also it's nice because you can clean the metal floor. Hang the carpet somewhere so it...
I think those gauges turned out a bit too good. Remember you have to look at the road as you drive, not drooling over the gauge cluster. I'd probably hit a school bus if my gauges looked that good. :)