Any airplane such as a Kaos that has a non removable tub type cowling (If you have the current arf forty size it may be a removable cowl, don,t know) You really need a round mount and not those humongous square adjustables and I definately avoid the clamp type mounts for that airplane.

The mount you linked would work fine, my preferance is for the Dave Brown mounts and use those on almost everything:

http://www3.towerhobbies.com/cgi-bin...?&I=LXB872&P=7


John