A friend is giving me a compressor that we have to build. He has a tank, and a compressor, and we have to mesh it all together. He's experienced so it shouldn't be a big deal. I am just going to need a pressure switch. That part is taken care of My air tools require 90psi so does that mean I need a 90psi pressure switch? Or do I want a higher psi switch, with a pressure regulator on the line to the tools? I am not sure how big the tank is that he's giving me, or the cfm rating of the compressor but I will find out when I see the stuff (its at his shop). Regardless, what do you guys consider a big enough tank? I also intend to mount a tank in my FJ55. How big of a tank will I need, at what psi, to air up 4 35" tires from 15lbs to 35lbs, or so? Also, how do I take care of oiling the tools? There's an inline oiler that came with the tool kit but I have no idea how to use it. The kit was on clearance for $25 and had no instructions. But hey I got an impact wrench, air rachet, and an air hammer, along with various and sundry fittings, for $25. Not bad even if they are cheapies from wal-mart Any and all advice is appreciated. If the answer is "go read here" then that's fine too. I haven't done much searching, as I don't know where to start! Thanks again!