Tom,
Does the plane have provision for a pipe of any kind. I have an OS 160 with pump running a Chip Hyde pipe and moose can that is 6 onces lighter than with the standard muffler and turns a APC 18x6 wide at 9000 rpm. Right now it is on a 80 inch wingspan Tunnel Vision. I can only imagine the little Edge would really "Shred" (a new word I learned from Silversurfer) With this engine combination. And I would just have to get one since I don't have a Little Bunny.