I have three types of voltage regulators in stock, the MPI 6 volt, the MPI adjustable, and the Ubec switching BEC. These are a must have item for anybody using high voltage or strong servos. I run them on just about every vehicle and have chosen these three for cost effectiveness and power.
http://holmeshobbies.com/home.php?cat=13
http://holmeshobbies.com/home.php?cat=13