"Do you sell any showerheads that completely shut off water flow?"
No, and we are not aware of any showerheads that have the ability to completely stop water flow. With your shower valve still open and the showerhead completely closed, it is possible for hot water to force itself into the cold water line. Once the showerhead is opened again, only hot water flows for a moment, creating a risk of scalding. Showerheads are normally manufactured to dribble a small amount and prevent this from occurring.

"Does the showerhead I ordered swivel, or do I need an additional part for it to do so?"
It is rare for a showerhead not to have a swivel feature unless its position adjustment is in the shower arm or it is a "flat" model that is meant to be installed parallel to the floor. With the exception of those mentioned, some industrial models and most handshowers, standard-style showerheads generally come with a built-in swivel feature.

"How many nozzles (holes) does the "elephant" showerhead have?"
Approximately 75.

"Can I make this shower head into a non water saver and what are the specifications?"
In the U.S. it is not legal to make any brand or type of shower head into a non water-saving shower head using more than 2.5 gallons per minute (even if you prefer to take short 30 second showers - compared to long 30 minute showers). The specifications for the super shower heads above deliver 2.5 gallons per minute at 60 PSI (that is the legal maximum for all shower heads in the U.S.). Many showerheads will leak or fail if the restrictor is removed because they are not designed to handle a higher flow. We cannot legally suggest (nor even hint or imply) to you that it is "ok" to make these heads into non water-savers. We cannot, and will not, recommend that anyone violate any Federal energy conservation rules/laws.

We hope that we have helped you with super size showerheads at PlumbingStore.com