I have the wing finished besides installing the servo, and I have the horizontal stab and elevators finished other than covering and installing. I found a cowl, i just have to order it. I am going ahead and put my old faithfull OS 61 fx, if I had to bet, this engine has at least if not more than 10 gal. through it. I got it 2nd hand and that feller flew the fire out of it.