As the title says I'm looking for one. Been working like a Hebrew slave lately and I've barely had time for the family. Can anyone help me out?

Tubing - http://www.amazon.com/Standard-Flexible-Airline-Tubing-Aquariums/dp/B0002563MW/ref=sr_1_1?ie=UTF8&qid=1338416701&sr=8-1

T Connectors - http://www.amazon.com/Como-Aquarium-Plastic-Connector-Inline/dp/B007VCHM74/ref=sr_1_5?s=pet-supplies&ie=UTF8&qid=1338416845&sr=1-5

Gang valve - http://www.amazon.com/JW-Pet-Company-Accuair-Aquarium/dp/B001CQ41LK/ref=sr_1_4?s=pet-supplies&ie=UTF8&qid=1338416996&sr=1-4

Order these and you can make your own very easily. 

U shape with water goes between the bottom of two T connectors.  One side of each T connects to the gang valve with a short bit of tubing.  The other side of each T goes to the carb sync ports with some more tubing.

Warm up the bike, then shut it off and connect the tubing to the ports.  Make sure the gang valve is all the way open (allowing flow between the two connected tubes), and then start the bike.  Adjust the idle to 1750 rpm.  Adjust the carb screw to equal out the water level in each side of the U, and slowly close the gang valve and repeat.  Once the valve is closed and the water is level is even, you are good to go!

Hardest part is making sure there is no air in the tube.  I also had to stretch the tubing a bit with some needle nose to fit over the carb sync ports.  Carb sync was confirmed with the "Hillbilly" method of removing the coil from each side and confirming equal idle speed on each cylinder by itself, so it really does work!

Here is a diagram: http://wiki.gstwins.com/index.php?n=Maintenance.5CarbSync

And here are pics of mine.  I used a dual gang valve because that's all they had, but you only use one valve: http://gstwins.com/gsboard/index.php?topic=59113.msg685128#msg685128