Terry:
I mounted my compressor just under the brake booster, This location has two advantages. One is was the second battery mounting ledge, and I could run the air pick up line into my cab so my filter is out of any wet or dusty conditions. The compressor is mounted to a 1/4 thick steel plate and rides on rubber isolators. That allowed me to drill and mount the plate as a solid unit to the battery tray for easy removal for servicing. As you can see in the picture, my critical lines (for my ARB's), I used a 1/4 inch air brake lines that I got at a semi tractor trailer repair parts house. These lines are oil and gas resistant. Plus they have a 600 degree melting temp. There D.O.T. approved and have a proven track record. They are a bit stiff and come with quick disconnects, but after 7+ years I have never had to replace one, and if I ever need a replacement connection or air line, semi repair facilities are never far. I used the 3/8 I.D. flex lines (air brake line)to run to the tank to give me better volume, since I ran them through the frame rail down to the tank, since I didn't have the special tool to clamp the solid crimp bands that were recommended, I used hose clamps.
As to mounting the tank I used carriage bolts with large fender washers on both sides of tub and double nylox nuts (because the bag came with 8 nuts and I didn't have anything better to use them on)to secure them.
Now I also recomend that you head over to your local evco house of hoses, and get a M.S.A. (Mine Safety Appliances) approved hose connector. I found that the standard quick disconnect hose connectors that you get at your local Home Depot dont last 1-2 years out in the weather. This disconnect has been on my jeep for 5 years and no leaks.
