FMS will be offering its customers Freighter Conversions on the B737-300/400 installed by the STC holder.  At FMS we feel that havin the conversion accomplished by the STC holder will provide the customer with assurance that quality will not be sacrificed.  FMS is constantly working to increase additional freighters to our STC base.  If your aircraft is requiring a conversion, please call or email FMS for the support of your project from start to finish.