That's an interesting problem. One of my friends also has a T-28. I believe the motor in this plane is in the 480 size range. There are several good 3D planes in that size range, but they are all balsa. Maybe someone makes a foamy this size but I can't think of one off the top of my head. Maybe one of the other guys can chime in. If this is your first 3D plane and you are learning, I would stay away from balsa and go with EPP planes or a cheap Depron plane.