This has been covered before, Pete, but the best deal is for ReMan's from Continental. Try AirPower, they do a very good price. If you are looking for used, try Don Neiser
Don Nieser
Commodore Aerospace Corp
6221 Commodore lane
Oklahoma City OK 73162
405-722-4079 phone and FAX
405-503-4686 hangar cell phone
nieser.02.337parts@juno.com