Saw this guy had two of them, just not 100% sure if American Turbine fits Berkeley... Posted 4/9/13
http://www.performanceboats.com/parts-sale/137914-wtb-berkeley-droop-snoot.html
Also saw this one....
http://www.performanceboats.com/parts-sale/119002-droop-snoot-ski-tow-transom-plate.html
No experience with this kind though, somebody may chime in if they are any good or not. As of 4/9/13 he still had it.
This one is an older ad, but doesn't say if it sold or not.
http://www.performanceboats.com/parts-sale/109567-popoff-droop-4-inch-nozzle-spacer-jet-pump.html
If you are not a member over there, let me know & I'll get check on them for ya.