Does anyone now where I can purchase a 16 oz pool cue

Most any reputable pool room can order it for you.

Yes

billiards.com. You can specify how you want your cue. What ounce you want the cue, the shaft millimeter, if you want engraving, and the tip you want

Try this
http://amazon.com/gp/search?ie=UTF8&keywords=16%20oz%20pool%20cue&tag=p045-20&index=blended&linkCode=ur2&camp=1789&creative=9325
Hope this helps
Good luck!

Here is a good place:

http://beadsandbilliards.com/scliwecue.html

e bay