for 360 degree servo mayb u can try this cube servo
http://cytron.com.my/viewProduct.php?pid=CSwWIjYcOAccDBwQKgw8B8bTsP8xVDp5/Ji0CTq6F6M=if u wan to hack your servo, u will need to open it. most servo rotation is blocked from 360 at the last gear at the output shaft. u will need to cut off the plastic or metal pieces that block the rotation. and too remove the servo circuit.