I talked with Wall Colmonoy at Oshkosh. I was standing at the US Coast Guard booth talking to Jenny Stack and right next door was a rear muffler for a Skymaster. Pricing was very reasonable for new but I think this company will repair also. They have some kind of heat treatment they use also.
Wall Colmonoy Oklahoma City
FAA Repair Station BG2R715K
4700 S. E. 59th Oklahoma City, OK 73135
T. 405-672-1361ext. 12, or 1-800-433-5074
F. 405-670-3763
aircraftexhaust@wallcolmonoy.com
http://www.wallcolmonoy.com/aviation...termarket.html