Pettit-

One last question (hopefully). In terms of mufflers. I purchased the long extensions for the 160. Do I need to purchase mufflers to go on the end? I believe I would have to run muffler pressure correct? If so, what mufflers do I need or will fit? Will OS 91 or 120's fit? I received the plane and it's truely worth the money. Again, thank's for your help.

John