Modified Servo z-probe bracket.
This is a modified version of the Z-Probe bracket for a mendel I2 with a wades extruder and X-carriage by U-Design : http://www.thingiverse.com/thing:31021
This bracket is a Tight fit but works well. you may need to shave the inside of the bracket a little to fit your servo. I am currently using an 8g servo with this setup.
This also comes with a modified micro switch arm attachment, It's meant for the round disk attachment on your servo. It was the only attachment I had at the time.