I haven't found any potential need for any baffling yet. The air outlets appear to be well-placed for air cooling a twin, which makes sense when you think of the configuration of the full-scale Pitts engine. Some of the air will come through the front holes and go up, off to the sides, and out. Some of it will come in through the front holes, and funnel down and out the half-circle at the bottom. It should run right past the cylinders, and cool them nicely. And there are two other small holes in the front center.