I'm thinking about getting this air compressor and plumb it in to my rear bumper for an aux tank, http://www.amazon.com/Viair-45040-450C-Air-Compressor/dp/B000FQ78VI Anyone else done this and maybe a good place to put it in? I'm thinking under bed where spear tire used to be, or under hood but not much room there. I think it would be nice to have for air bags and if pulling trailer you can always fix a flat and air it up. I know I could buy a cheap one that plugs in cigarette lighter but I would rather go this way.