Okay
So here is what I did to mount my ARB Air Compressor. I have very limited room under the hood. I wanted it as close to the battery as possible, out of any mud and water, and able to keep it somewhat cool. I know, engine bay.
So, without further ado, I looked at it for awhile and thought about building a steel plate to hold it. but I really don't want to add a lot more weight to the vehicle.
I finally decided to mount it to my other compressor with the help of some 1/4" All thread and some nuts and washers, its mocked up. Cost me $3.08, the cheapest mod yet. I just need a few switches, wiring, an oring for the compressor tank, and hose to the air locker.