Hello everyone, I recently aquired a 60cc McCulloch engine from a pro mac 610 chainsaw, i will be mounting it on a 27% edge. I was wondering if anyone has converted this engine before, what results they got (prop,rpm) but most of all what did they do for a muffler? i can use a inverted style or a wrap-around style but have had no luck in finding any information on this engine. Please help me if you can with any information,links. thanks!!