I have a 120FZ with a dave brown mount and the Central Hobbies AAP header + header brace + teflon tube on my boxer. Its been working all season (150+ flights) with no problems.
--Derek
http://users.bestweb.net/~lieber/flying/boxer/index.htm
(Note: I added a 5/8 hose clamp on the muffler side of the teflon tube after the pictures were taken)