I am actually building one of these "old timers" at the moment from plans. That might be on option for you as well. You might try contacting Sig and see if the plans and instruction book are still available. Last I knew, you could still order rudder and elevator stock from them, since it's not a standard "off the shelf" item. I have modified mine, however. It is now getting ailerons and a 54" flat wing instead of the 48" with 1.75" per wing dihedral. While not up to "modern" standards, it still will get the job done[8D]