have a picture or modle number?
I was able to fit 2 in mine. and it ran all the time because of the empty space.
Had i built a deck to i could have as much floor space as possible, I probably could have fit 4, and mounted the tank to the inside of the door.
Best place to get the gas line in, would probably be in the back lower corner, where the compressor is, alot less coolant lines back there.