Hey,
I took my two bottles and used the factory brackets that come with the nos kit and put them into a upside down "v" shape...both handles together towards the front. I took a piece of plywood and cut it to the same shape and size of the tub and covered it with black carpet. I sat it right on top of the spare tire assembly. I then mounted my bottle brackets, heater relays, and quick disconnects for everything electrical...that way I can remove the whole thing as one unit. It fits in perfect and is pretty easy to change the bottles. You could buy some of the quick release brackets from NOS or there are several places that sell nice billet brackets also. You can really get as crazy as your wallet will let you. Hope that helps.
Later,
Joe