Kyosho Gee Bee Model Z
Why lighter than an OS .46? My Kyosho Gee Bee (and every other one I have seen) took approximately 20 oz in the nose to balance. I used an older Enya .80 four stroke, just the right weight and turns a larger prop, I typically use a 13x5 or 14x5. Seems to be plenty fast, but not blinding speed. Someone earlier said it, this plane has a huge cowl! Some engines that will develope monster RPM, the prop may be smaller diameter than the cowl. Good luck, the Gee Bee looks great in the air.