This is a vintage Sterling RIMFIRE high performance radio control model kit # FS 27.  The model has a 56” wingspan, and wing area of 525 square inches.  It can be powered by a .29 to .45 ci engine.  All the pieces are there, and construction on the fuselage was started by me.  I built a lot of model aircraft but never finished this one.  I brought the kit to California from New York in 1976.  I will ship the kit in second box, by UPS.