I have a Sig Kavalier that had one Futaba 3004 servo in the wing center connecting to torque rods. That servo has 42 oz of torque, I think. I put in 2 of the Hitechs side by side, one for each torque rod. So, that gave me more power per aileron than the single Futaba standard servo. It is ridiculously easy to do and I actually saved about .1 oz in weight. Plus, I have stronger servo power to the ailerons and can set aileron differential if I need to....or flaperons. I only had to shave off less than 1/8 inch of the bay for both servos to fit.