Overflow tank

i was looking at the cool aluminum ones you could buy, and decided i could make one of those out of a small fire extinguisher ( there made of aluminum ) empty it out, strip the paint off, polish it up...i think i used part of the plastic head to plug the hole, ( the whole head assembly screws out) then put a small peice of tubing to connect a hose to..mounted it upside down an put a small air hole in the top (bottom) for releif...works like a champ and looks very cool!!!!!