I am going to fit a cannister muffler into a Edge 540, mine is distributed by Top Gun, but it is the same as the Hanger 9 Edge 540 that they no longer sell, the Edge is not designed for a cannister so lots of cutting and mods will be needed, the MTW 75 cannister will arives sometime this week and I will detail the mods on here.
Meanwhile I have modded the Edge somewhat by installing the rudder servo at the rear still with a pull pull cable system, if you are interested this mod can be found on
http://www.rcuniverse.com/forum/m_4629728/tm.htm on this forum.
Mike