Do any of you have on board air of any kind? How is your sys set up? I was just digging around in the garage and found an air compressor from an eighties caddy. It was used for the air shocks for auto leveling. It seems like a sturdy unit, the motor is about the size of my fist and pretty heavy. I was thinking maybe get a 3 gallon tank and mount it to the frame. My main use would be to air up my 32"s. How long does it take to air up your tires? I was also looking at the ac compressor systems. They say you can run air tools off of it, but I don't think it would help my gas mi any running two compressors. Just some thoughts..