Hey aeajr,
I saw your post and looked as I'm "kind of" interested in converting my 9cSuper to 2.4 on some of my planes too. I did some looking and although there's a bunch of stuff out there, I randomly looked at these two sites below. One fairly positive and one not so.
http://www.aero-nuts.com/product_inf...roducts_id=636 (this has a you tube video atteched)
http://www.youtube.com/watch?v=HYj1t5Dh_6E
Keith