visioneer_one, if you are looking for more speed for your Miss America, trying sticking either a YS FZ63 or a YS FZ91 in it. Those engines haul *****. I have a YS 63 in my 40-size Zero, spinning a Graupner prop at 11,200 rpm. My Zero has the same speed and vertical performance as an H9 Mustang powered by a Saito 100. We were flying together, and the Mustang couldn't overtake me at full throttle. I was definitely faster than a 40-size Mustang powered by a Saito 80.